Sound Compression

Hi, i just wanted to know if there is a way not to let flash
compress the quality of audio file when SWF is published.
When i import an audio file (size 135 KBs, sample rate 32
KBPS) and i publish the file (with settings, 32KBPS, Quality Best),
the published SWF file size is 127 KBs and the quality of the sound
is lower than the quality of the orignal sound file.
Is there a way to make flash not compress the sound file?
Thanks,
Uzair Rahim

As far as I have been able to determine the answer is no. It
seems like there should be, but it doesn't seem to work.

Similar Messages

DV7 w/ Beats.. sound compression?

I just purchased a DV7 with Beats audio, and audio quality was one of my motives for choosing this device.
Audio through the headphone jack is respectable. Very strong output.
Audio through the internal speakers and subwoofer? Absolutely disappointing.
The speakers themselves sound great for a laptop, but something (I am confident is software related) sounds like it is compressing all of my sound. When a "loud" treble sound is played (such as a cymbal), the volume is instantly drawn back as if to protect the speakers or something (which only a purpose built subwoofer would ever need such protection). At one point, I was listening to a song and it sounded like I was standing underneath a helicopter, it was that agressive with cutting sound. It literally hurt to listen to! Unacceptable.
Let's go through what I've tried already:
1) Trying a different audio source:
I thought it may have just been Windows Media Player (which has all "enhancements" disabled). I loaded up Grooveshark.com in Internet Explorer and it sounded the same.
2) Turn off any Windows sound "enhancements:"
This was the first thing I checked. I was certain that the "loudness correction" filter was enabled. But sure enough, it wasn't.
3) Windows Tone Control:
This was new. I've never seen this control before. Because Beats assumes everyone wants max bass and treble, they are default full boost. I reset them to zero hoping that it would solve the "choppiness," but it didn't. The sound quality did improve, though.
4) Update audio drivers:
I went to HP, downloaded and installed the audio driver recommended for my particular laptop, and this didn't help either.
5) Uninstall IDT audio controller:
I thought maybe IDT was responsible for doing it. Nope. Same hat.
6) Reinstall IDT (Beats) audio controller (same driver as #4):
Now I'm back to square one.
Here is something of particular interest:
This time around, I tried playing with the "Beats" IDT equalizer, and nothing I did changed the sound. I went full highs boost to full hughs cut, and it made no difference. That tells me something is either "masking" my sound trying to make it sound "right" (which is actually atrocious), or is completely bypassing the "Beats" IDT controller. The problem is, I have no idea what it could be.
For a laptop marketed towards the audio enthusiast, it completely misses the mark. Sound compression is one of the worst things you can do to sound quality!
Also, this Beats audio thing is a gimmick. Just a rebadged IDT audio controller, and fn+b only boosts or cuts the "bass" setting in Windows. I can't believe this is called a laptop specialized for audio. My old DV4 has much better sound as of right now. How can the Beats people call themselves audiophiles?
I apologize if some of this sounds harsh, but I am very frustratingly unimpressed with the audio aspect of this laptop, which I specifically chose because it promised exceptional audio.
I love the rest of the laptop (save for the touchpad which I'm still getting used to), but if I can't even listen to music on it like I had planned, I may as well return it.
All suggestions are greatly appreciated.

Hello all, this is not a problem you can fix this easily with some fiddling.
try this modification, originally intended for Envy with Beats, its still modifable to fit your brand and you should be getting similar effects with loud noise.
http://forum.notebookreview.com/5668647-post3614.html
Say thanks by clicking the "Kudos! Star" which is on the left.
Make it easier for other people to find solutions, by marking my answer with "Accept as Solution" if it solves your issue.

Audio sounds compressed, hollow, and tinny coming out of my computer

Hi everyone -
I'm having an audio issue when playing files in iTunes 8.1.1 (10) and Quicktime Pro 7.6 (472) . I'm using ia Dual 2.7 Ghz PowerPC G5 running OS X Version 10.4.11.
Recently I discovered that all of my audio files (music and spoken word podcasts) started sounding compressed, hollow, and tinny, both when I'm playing the files out of my speakers (Harman Kardon Soundsticks) or headphones (Sony MDR-7606).
At first I posted this message over on the iTunes forum, but after playing the files in Quicktime I discovered that they still sounded compressed. The majority of my audio files are ripped from my CD collection using 256 kbps, 44.100 kHz, VBR, optimized for Velocity Engine.
I don't think it's an issue with the files themselves - they sound normal when I play them using the same version of iTunes or Quicktime on my MacBook Pro running OS X 10.5.6, which makes me think it's a software issue with OS X, or perhaps a hardware issue - but I'm totally at a loss as to what would cause this change in audio quality.
Does anyone have any ideas?
Thanks,
Dan

Thank you so much for this info! I have been trying to figure this out for months... Been driving me crazy why the audio sounded compressed and hollow when listening to it from within iTunes. Listening to 'previews' of the same audio files from the desktop sounded WAY better - now they both sound the same.
Thanks again!

Terrible sound compression

Hi I have just purchased this HP Pavilion pc with Beatsaudio, the sound is absolute crap, there is so much compression it makes it virtually unlistenable, I need to get rid of beats audio as I am unable to turn it off completely. I am a musician and alway use my laptop to accept music from my digital recorder but I just cant get rid of this awful compression.Also my old laptop had a 'Mic in' input where I could download directly from my recorder using Audacity, does any body know of a device which would allow me to use a usb port to allow me to record from my recorder.Thanks all

Hello pissedoffmuso,
Thank you for posting on the HP Support Forums. I have brought your issue to the attention of an appropriate team within HP. They will likely request information from you in order to look up your case details or product serial number. Please look for a private message from an identified HP contact. Additionally, keep in mind not to publicaly post ( serial numbers and case details).
If you are unfamiliar with how the Forum's private message capability works, you can learn about that here.
If you have already resolved your matters, please disregard this message.
Thank you
Duane_D

How do I stop beats audio compressing the sound up and down

How do I stop beats audio compressing the sound up and down.

Hi Strung,
I see that you are having some issues with compression and Beats Audio. I have done some research into your issue and will be happy to help. Here are a couple of links to HP Support Forum threads where they talk about the settings in the Beats Audio.
http://h30434.www3.hp.com/t5/Notebook-PC-Sound-and-Audio/DV7-w-Beats-sound-compression/td-p/396705/p...
http://h30434.www3.hp.com/t5/Notebook-PC-Sound-and-Audio/Beats-Audio-EQ-Setting-General-Sound-Advice...
Take a look and fiddle with your settings and let me know how it goes.
Thank you,
Please click “Accept as Solution ” if you feel my post solved your issue.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Thank you,
BHK6
I work on behalf of HP

Sound drops like its compressed on music

I have rca audio cables to my TV and when I play music the sound compresses very quiet when a lot of instruments start. Example: Acoustic guitar at beginning of song and music is very very loud but once whole band start it goes to about 1/3 - 1/2 of the volume. Sound check is off. I have tried it with off and on and same results. Defective AppleTV?

Hi
In the Settings page make sure 'Sound Check' is off, as this limits the dynamic range of the material played back - I didn't know what it was but it sounded it awful when I had the settin set to On.
Alley Cat

Sky Movies sound problems. Compressed, flat & dull

Hello, thought i'd check back in regarding the Sky sound compression on Sky Movies. Kinda gave up watching movies on Sky because of the sound but tried 'Lucy' at the weekend & guess what? Flat, dull & lifeless!! I gather from forums the major distributors are now releasing their movies to Sky with dynamic range compression, if that's the case I'm snookered, can anyone confirm this? It's OK Sky, I don't expect you to answer this incredibly difficult question . Oh yeah, the online chat person this morning said "Change your HD cable" Hahaha. No amount of changing cable/HDMI configuration is going to fix this for me, I’ve tried every option i assure you. I realise I'm in the minority & the most Sky substribers couldn’t care less about their sound experience but I believe I/we deserve some kind of answer especially after beong loyal to Sky for over 20 years. Anyhow, last call for attention before I cancel. Thanks.

Hi Mark, man alive, a reply from Sky, not expecting that in the slightest nor would it be relevant either (ie. change your HD cable) , I was just curious to see if anyone else is still having the same frustrating sound problem as mine.

AC3 5.1 Dynamic Range Compression

I have the new ATV2, although there is no switch in the menu's I believe Apple have switched on AC3 Dynamic Range Compression. The audio via my decoder sounds compressed missing ' dynamics'.
Has anyone else noticed.
There is a software switch in Apples 'DVD Player'

Hi Hal,
Thanks for the info. I've been doing all as you say:
-always hitting return after entering "-31"
-always setting compression to none
-always leaving RF Overmod unchecked
**Does the "Dyn Rng Comp" affect ONLY ac3 and NOT pcm? I'd assume so...(triggered by code).
I'm running 10.2.8 (for reasons I won't go into) and my version of DVD player (3.2) does not have any preference that I can find for "dynamic range comp" nor does it have the "disc setup" section in the prefs (similar but not there). I've searched high and low but it's just not there. I'd turn it off if I could but am at a loss for a way.
Nor can I find any such preference in DVDSP 2.0 (which has the same problem with my ac3 audio). For kicks I went into os9 and ran its version of DVD player (which also has no pref for dyn rng cmp) and it had the same probs.
Just scratching my head why 3 different programs on 2 platforms would raise the level and mess with the ac3 part of my program (while leaving the pcm alone) and with no way to disable the problem. I figured it was system wide but, searching high and low again, couldn't find a system pref for dyn rng comp in either os9 or 10.
I'd trust that it's nothing to worry about, but this release will be going into thousands of homes and I want to know why this is happening before taking a chance.
Wishing I could find that it's something I'm doing wrong but can't find what and it's holding up the completion of an overdue project.
Thanks

Sound recordin midlet and custom audio codec.

Hello,
I'm working on a voice-mail application and I would like to use my own audio codec. (not because it's better than AMR, for example, but this way I can use my on codec on a large variety of phones that does not have a native sound compression engine).
Anyway the problem is that, not all phones supporting sound recording, supports RAW / WAV recording as far as I know. Is that true?
On the other hand, most of the phones supports WAV audio playback. Is that also correct ?
What do you suggests in this case?
1. quit the project.
2. do not use my codec; record sound in any format; decode audio data on server side and re-encode in a compatible format, depending the destination phone.
3. find a list with phones and all supported audio formats, and restrict the usage of the application depending on that list (is there such a list available, at least for nokia, sony-ericsson, black-berry).
null

Hello,
I'm working on a voice-mail application and I would like to use my own audio codec. (not because it's better than AMR, for example, but this way I can use my on codec on a large variety of phones that does not have a native sound compression engine).
Anyway the problem is that, not all phones supporting sound recording, supports RAW / WAV recording as far as I know. Is that true?
On the other hand, most of the phones supports WAV audio playback. Is that also correct ?
What do you suggests in this case?
1. quit the project.
2. do not use my codec; record sound in any format; decode audio data on server side and re-encode in a compatible format, depending the destination phone.
3. find a list with phones and all supported audio formats, and restrict the usage of the application depending on that list (is there such a list available, at least for nokia, sony-ericsson, black-berry).
null

Inputting sound into flash

Hi all,
What i am trying to do is to create an interactive
application, possibly in flash, which will allow me to connect my
electric guitar to my computer via an audio in port and record what
i play. I would like the application to recognise what notes i am
playing and display them on screen. I would assume that the
application would need to differentiate between the different
pitches and frequencies of the note.
Does anyone know if flash has the capabilities of achieving
this, or if there is a plugin available which will.
Any help with this will be greatly appreciated
Leo

I couldn't find anything wrong with that sound file. It imported and played just fine for me. One problem may be that if you are trying to import a lot of sound files at the same time, you may be running out of memory. Have you tried importing the sounds one or two at a time?
If you are fully importing these files into your movie, and the files are available in other formats, then you can import AIF or WAV files and then recompress these files to be saved as MP3 sound files inside the Flash movie. Use the Properties option in the Library for the sound file to see more about sound compression options. The downside to importing and recompressing sounds in Flash are that the sounds will be compressed every time you use Test Movie, and so this process takes much longer. The download at runtime will seem to freeze as the sound files are downloaded and uncompressed. This can be annoying to your users. The positive aspect of importing high quality sound files into your Flash movie is that you will start with a very high quality sound that you can compress as you like.
Even if the sounds are short in duration, you can set the files to be imported at runtime. You can download the sounds before you need them and then hold them in memory to be used as needed.

Do I compress the levels here?

I posted a similar question as a response in another topic and was politely reminded that "there is no free lunch" and that I would have to correct each section, so I'm aware that I may be out of luck. But I wanted to post this as a new question for broader view.
I am finishing up editing a lecture where the soundman put the lav on the speaker's left jacket lapel. The speaker would turn to and from the screen, so the audio is loud and clear whenever he looked toward the screen (left) and much lower and muddier when he looks to the audience. I have brought the low levels up and corrected the most egregious problems so far, but there are still some places where I want to be able to take down the levels.
Can I cut out the process of going through each loud place (the lecture is an hour and a half long) by applying a compressor effect?
A cameraman and video editor, I don't really understand much about sound editing and have never really understood sound compression, so I'd really appreciate any help or link to a better resource.
Thanks,
Stef

Hi, a limiter and a compressor are basically the same thing with different ratios.
Think of it like a trampoline over your head. As you (the volume) jump up, the trampoline starts to hold you back at a certain height (threshold). The tighter you stretch the trampoline skin the less you can exceed the threshhold - that is analogous to the ratio. Then there is attack and release which is pretty straightforward.
The problem with applying compression to your wildly varying levels is "where to set the threshold". If set to work on the low level signal, then the loud parts will be constantly getting smashed against the threshold and become distorted. If you set it to work on the louder parts, then the softer parts will be unaffected by the compressor. So maybe there is an inbetween.
Also from your description it sounds like when he turns away it could also benefit from equalization. Since he is off mic you probably need to either boost the hi frequencies or cut the lows or probably a combination of both. Maybe automating some EQ would help in these instances.
+I don't mean to shut off any debate about the solution, and possibly someone else has a better idea.+
Good luck,
jim

End of Stream has been reached error CS4

After transcoding the main video file during the build, Encore then prepares "Planning audio for movie" at which case the error "end of stream has been reached" pop up window appears and the burn subsequently fails. There are no errors within the project and I have burned the project successfully onto a DVD with no error in the past. The only changes this time around is a re encoding of the video file (Uncompressed AVI 1920 x 1280 max depth bit), a change in the video thumbnails for the chapter selection pages, and a tweeking of the chapter points. Because the video file is so large, I delete the previous AVI file and export again using the same name to create the approriate links. I have read that the sound compression is the main cause for this error, however, I have not done anything sound related between versions of the DVD. How can I fix this error from occurring? Thanks in advance.

Especially with muxed (Audio & Video), there is a slightly different Block Size for each stream, so what appears to match 100% in PrPro can be every so slightly longer (Audio), when Transcoded. That is why I always leave a touch of "silence" in my Audio.
For my edits, I almost always start with a Dip-to-Black, from an 02 sec. bit of Black Video, and then end with another 02 sec. of Black Video. My Audio always ends, just before the end of that Black Video. This also makes things seem to flow better, between Timelines, as the user sees things Dip-to-Black, and unless they have a stopwatch going, do not know if a moment has elapsed, when the laser moves, and the next Timeline comes up from black. There is never a jolting "black flash."
Good luck,
Hunt

Export to AVI file too large! The secret setting to smaller AVI files is?

The recent death of a internationally respect friend has put me in a position of creating a memorial video for an upcoming event—and it should have been finished 2 days ago! So I'm pressed for time.
The problem is the display format: a large digital picture frame that also shows stereo video, but only in AVI format. We've tried .mov, .mpeg, .divx, .wmv, .vcl, .mpg1 to 4... Nope. It's got to be .avi or the picture frame balks. (Really, any .avi movie plays fine and no other format works.)
So I've taken the 5-minute memorial video, exported it as AVI and it comes out okay—except the smallest file size I can get is over 1.12GB! Whew! By comaprison, exporting to DIVX would get it down to around 100MB with decent quality. But 1.12GB is simply too huge for such a short video.
What's the correct export in FCE for lowest possible AVI yet still have good video?

Note: All video was transferred from a Panasonic NV-GS250 digital tape camera. It's 5 years old.
I've played with three codecs and the lowest file size I can achieve is roughly 400Mb in Cinepak Low Quality at 25fps, but regardless of the Cinepak setting (very low or very high) the picture quality is awful and washy, colors pixelate and come and go—and it doesn't matter if the video is showing still images or motion. Not useful at all. The colors are "millions" and changing that to 256 immediately shoots the file(s) up to over 12GB! (Yet I'd think it should be the other way around.)
Cinepak, DV-PAL, and DVCPRO-PAL are the three compressions I've tried, and the PALs convert with good picture quality and good sound to a minimum 1.2GB all the way up to over 20GB for a 5-minute video; Interlaced or Progressive doesn't reduce anything; of these None is the lowest. I +haven't tired+ DVCPRO50-PAL and neither any NTSC compressions (because I live in Germany). But this is for a digital picture frame—that I cannot change and for some weird reason will only support AVI—and it's not a T.V., rather it's no different that any modern flatscreen computer display. So how should PAL or NTSC make a difference?
Sound compression has been tried at ALaw 2:1 and µLaw 2:1, but they also seem to keep the overall file size too large. So I've been working more with None. Using 8 bit actually increases file size over 16 bit, and I've noticed little difference between mono or stereo.
I've worked with FCE for nearly 2 years and have never had such a headache over file sizes. But now I've met my match with AVI.

Music format that will be valid in twenty years time??????

I have bought an external hard drive for my music to allow me to store and downsize my library.
I have no faith that the mp3 format will last.
So I would like advice on which format to use e.g. AIFF, apple lossless or something which could then be converted to mp3 or other compatible format for later use on the ipod?
The file shaving and compression techniques employed deliver differing results. mp4s is here as is wav et cetera so I am nervous about converting to the wrong format and then having to repurchase those cds I had. My current library size in itunes is 80Gb in mp3and that is about half of my music collection.
I would like this to be the last time I have to rip my cds. or should I have more faith in Apple not deserting their ipod devotees??????
many thanks( in advance) for your time
Stephen
imac, ipod 3g 40gb Mac OS X (10.3.9)
imac, ipod 3g 40gb Mac OS X (10.3.9)

I think it's likely that you will always be able to find codecs for the most popular formats floating around the internet somewhere. Personally I use Apple Lossless as I feel it offers the best size/quality ratio (and it plays on my iPod).
What with advances in audio technology, there's always going to be a new format that offers better sound/compression/more channels etc, and there's not a lot us consumers can do about it (well, I guess we could stick to vinyl). I have a few albums on vinyl, cassette, CD, and SACD (yeah, I know, I'm a sucker), and that's not to mention remastered versions, remixed versions, special editions, etc, etc.
But if you're really bothered, then you should store your music as WAV or AIFF files. They've been around longer than the other current formats, and still serve as the de facto "default formats" for much of the music industry. They also sound better than lossy formats. Though at 600Mb + per CD, it might be time to start saving for a bigger hard disk!

Need to export as a 8 bit, 8 khz, PCM mu-law WAV file

I have an MP3 that I need to export as a 8 bit, 8 khz, PCM mu-law WAV file (it's for a phone system that is kinda old).
I've found programs that will do mu-law but not at 8 bit, etc. Quicktime will do the 8 bit and 8 khz WAV, but not PCM mu-law (it only does linear). Ironically, Mu-law (u-law) is an option for sound compression for AVI, but not WAV. It's there. I just need to know how to tap into it.

alaw and ulaw are commonly used in telephony systems, such as VoIP. For example we record voice messages - such as welcomes, prompts or instructional and progress - in natively support format for Asterisk in alaw.
Here is a wiki link for your convenience http://en.wikipedia.org/wiki/G.711
iMac (Intel) Mac OS X (10.4.8)

Sound Compression

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