Audio output with monitor conneted

i ahve a macbook pro and whenever i connect it to my cinema display then hook up to speakers i get this feedback on audio system. if i unplug monitor feedback dissapears. does any1 know a way to solve this?
Message was edited by: mark2kay

Maybe you don't really mean feedback. Are you hearing a very loud squealing? That is acoustic feedback from an open microphone near speakers.
Do you hear soft varying buzzing noises? That seems to be a ground problem with external display and external speakers connected. See this thread:
http://discussions.apple.com/thread.jspa?threadID=1807161&tstart=0

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Apple Audio Output levels / monitor calibration

Hello all. I am mixing sfx and foley out of my macbook pro, and as a student on a very limited budget, I am forced to monitor with a consumer stereo - run of the mill Sony surround receiver, powering a pair of JBL Northridge N26II's. I know, bad reference and probably a frequency curve that is not even close to flat, but it is all I have access to right now for the bulk of my work. I have limited studio time with monitors, and I plan to use this to touch up these mixes that were done on the JBL's. The idea is that I do the bulk of my work, then bring it into the studio, hopefully to be able to salvage the mix. At least it is better than headphones.
Anyway, I am attempting to calibrate my system, and I have a few questions. To get the audio out (at line level I believe, through the headphone jack on the MBP), I am wondering at what level I should set my system volume. Is the zero at the highest setting, as indicated on the volume slider in the Audio Output section of the Audio MIDI Setup program in OSX? Or is this amplifying the signal?
Also, I have been told that I could use the ref. tone generated when one puts the bars up in Final Cut Pro to calibrate my monitoring setup, thus assuming that every level slider is at zero on the way from the audio source (say tone in FCP, or tracks of audio in STP or logic), I could adjust the receiver's volume control to playback the tone at a comfortable level and keep it there for the duration of the mix. Is this legit, or do I have some flaws in this plan?

Hello all. I am mixing sfx and foley out of my macbook pro, and as a student on a very limited budget, I am forced to monitor with a consumer stereo - run of the mill Sony surround receiver, powering a pair of JBL Northridge N26II's. I know, bad reference and probably a frequency curve that is not even close to flat, but it is all I have access to right now for the bulk of my work. I have limited studio time with monitors, and I plan to use this to touch up these mixes that were done on the JBL's. The idea is that I do the bulk of my work, then bring it into the studio, hopefully to be able to salvage the mix. At least it is better than headphones.
Anyway, I am attempting to calibrate my system, and I have a few questions. To get the audio out (at line level I believe, through the headphone jack on the MBP), I am wondering at what level I should set my system volume. Is the zero at the highest setting, as indicated on the volume slider in the Audio Output section of the Audio MIDI Setup program in OSX? Or is this amplifying the signal?
Also, I have been told that I could use the ref. tone generated when one puts the bars up in Final Cut Pro to calibrate my monitoring setup, thus assuming that every level slider is at zero on the way from the audio source (say tone in FCP, or tracks of audio in STP or logic), I could adjust the receiver's volume control to playback the tone at a comfortable level and keep it there for the duration of the mix. Is this legit, or do I have some flaws in this plan?

No audio output with wireless projector connection

I use EasyMP Network Projection software to connect wirelessly to a projector. Until about two weeks ago (before Yosemite OS came out) the connection stopped streaming sound through the projectors speakers. The video works but the sound only comes out of my laptops speakers (Macbook Air) and I don't see the projectors audio output show up in the sound control panel. I know the projector is not to blame because other people can use the projector and get sound out of it. I'm also getting an error upon opening the EasyMP software that says "You need to restart your computer to enable Audio Output" but restarting the computer makes no difference.
Steps taken to resolve issue:
Uninstalled and reinstalled the EasyMP software
Reset the SMC
Restarted the computer
Repaired file permissions with Disk Utility.

I have outputs 1+2 connected to a pair of Audix powered monitors. I've tested the monitors with other audio sources, and they work. Also, I'm not getting any audio from the headphone jack. This makes me think that I've either got something set incorrectly with the software, or there's something wrong with the mixer.
I also tried running Garageband with the FW-1884 and had the same problem, if that helps.

Audio output with aerender

I'm encountering a strange behavior on CC's aerender that becomes different depending on the presence of ae_render_only_node.txt, even if it's not supposed to.
I've made an example project called test.aep, with a custom output module called "QTAudioOn," with "Audio Output On" to have an audio track every time something gets rendered.
test.w_node.mov is when there was ~/Documents/ae_render_only_node.txt, test.wo_node.mov is when there wasn't. In the same configuration, the yielded files came out different.
test.w_node.mov was missing an audio track, that is supposed to be silent track according to the output module configuration.
It seems test.w_node.mov was created using "Audio Output Auto" output option which was newly introduced with CC. The same process was never a problem with CS6. This problem frustrated me since we concatenate videos in order and merge the audio with other audio track programatically using MP4Box and ffmpeg. Missing audio track scrambles the result video in concatenation process.
Is there any way to fix this problem? Maybe I could make silent track using ffmpeg, but it seems too much.
Thanks.
Don.
Edit: test.aep consists of only one red solid object, nothing else.

For those who are interested, here's how to add a silent audio track to rendered video:
$ ffmpeg.exe -f lavfi -i aevalsrc=0,aconvert=s16:stereo -y -i input.mp4 -shortest -c:v copy -c:a aac -b:a 192k -ar 48000 -strict experimental output.mp4

Audio Output with fullsize headphones

I don't know the specs on the audio outputs for the iMac but can it sufficiently support a Sennheiser HD555 or HD595 headphones for full audio potential? I believe those cans have a 120 ohm impedance so I'm unsure if an amp is needed.

Hi, we just plug em" in direct.. You do have Audio MIDI SetUp (Utilities) - in which you can make various input/output selections....L

Audio Output with firewire audio interface issue

Hi, i have a quick question that maybe someone here can answer for me. I originally posted this in the OS X forum but someone recommended that I may get better help here.
I have a PowerPC G5 with Mac OS X 10.4.11. I do a lot of home recording and use a Presonus Firebox Firewire recording box. I recently picked up some new monitor speakers that I run the outputs of my Firebox to and I use the Firebox as my output sound device in my system preferences.
Everything works pretty well unless I touch one of the volume buttons on my keyboard (which I tend to do out of habit pretty often). If I do press one of the buttons the volume dips way down and I have to pump my speakers and firebox volume up all the way up to hear them. If I do this, and then happen to put my computer to sleep when I awake the computer the volume is now at an extremely high level until of course I press one of the volume buttons on the keyboard.
The big problem is I have twice in the first two days of having my new speakers turned them way up and later in the day awoke my computer from sleep mode and had itunes or a dvd BLAST out of my speakers at a ridiculous volume.
My question would be is there some way in os x I can disable the volume buttons from being used if i am using a different output device? OR is there a better way for me to set my system up in my system preferences?
It was suggested in another forum that I look into the help for the Firebox unit instead of the mac so I have started to do this as well. I just thought that because everything works fine UNTIL I touch the computers keyboard it seems like the computer is making some drastic change in how the sound is being output, so I thought I'd try to find an answer here as well!
Thanks so much to anyone in advance who has any sort of help with sound preferences and or settings!!

This is a very good point! Thanks for your response.
I do realize that I have multiple volume controls going on here in a chain. First my computer, then the Firebox interface, then my speakers have volume knobs...
But what I am seeing is when I first press a volume key on my computer (even if it is the VOLUME UP key) there is drastic lowering in volume. Only until I put my computer to sleep, and awaken it does the volume return to a normal level.
It seems that when I am pressing the volume on my computer it is activating something on the mac's end... or changing the way the sound is being output.
Again all of this could be avoided by me not pressing those 3 keys on my keyboard... but old habits die hard! so if there was a way for my mac to give total control of sound output over to my firebox that would be best.
any more help is greatly appreciated!

How listening audio output with console digidesign 002

i have conncected the fcp5 with the digidesign 002. I have made all the necessary settings, that provide the connection, through audio/video settings/user preferences etc... Though, when i put something to the canvas, i can listen from the speakers, but the channels of didgidesign don't communicate with the audio channels in fcp.2)when i do log and capture from the cam, the logged footage has sound, but i can't listen to it, when the sound is connected via digidesig. It seems that something is wrong but i don't know what. Does anyone knows?

You have to use the Digi-002 in Standalone mode, as a mixer. Press the standalone button and then select 'Yes'.
I connect the optical audio cable from my G5 into the optical audio in the back of the 002. You'll have to read the manual to make faders 7 and 8 'listen' to the optical port rather than the XLR inputs. And then in System preferences on the MAC, the Audio Out would be Optical Digital-Port out.
The only time I use the 002 in it's regular mode is i) when I'm using Pro Tools, or ii) when I'm using Garageband and using the 002 as my audio input device.
Hope that helps.
Jim

Premiere CS4 Audio Output with Decklink

Hi,
i found serveral posts in the net for my Problem, but no solution.
Were on a WindowsXP machine with Premiere CS4 and a Blackmagic Decklink Card.
If we choose a Sequence-Preset from Blackmagic Decklink (which is important for us) and choose the internal Soundcard for Audio Playback,
we dont hear anything. The Audio is routed through the Decklink. We have tried everything to achieve that that audio will be played through the internal Soundcard, but it seems as if the Settings are overwritten by the Decklink Preset.
In CS3 this Problem doesnt exist.
Many thankx in advance for your help....
Sascha

oh, we have the actual CS4 Update and Deckling Driver installed.

Can i select displays mirror and change audio output with applescript

Hi
I am trying to write an Applescript the will gather and mirror displays and change the audio out setings. Can this be done?

Hi Keith,
you can handle the channels like "normal" strings. See the attached picture.
Hope it helps.
Mike
Message Edited by MikeS81 on 07-25-2008 06:46 AM
Attachments:
Unbenannt1.PNG ‏6 KB

How to get the Mac Mini Digital Audio output at 192kHz?

I have a mid 2011 Mac Mini (and love it). According to http://support.apple.com/kb/HT4806, "The headphone / line output port accommodates digital optical audio output, analog audio output with a 24-bit, 44.1-192 kHz D/A converter, digital audio output up to 24-bit stereo and 44.1-192 kHz sampling rate and supporting encoded digital audio output (AC3 and DTS)."
So there is digital audio output to 192 kHz but how do you configure it to work? Using the Audio Midi Setup Utility, I can set the sample rate to 96000 Hz -- but it won't go higher to 192kHz. Anyone know how to do this?

That is in some ways confusing. For the analog output, the
internal DAC can support 24 bit/192Khz audio data. It does
require an application that has the capability of playing back
such material.
The TOSLINK optical standard does not support this data rate.
It has nothing to do with the Mini, it is the standard itself. The
TOSLINK optical spec is 96 kHz, 24 bit stereo (uncompressed).
The mini will however support multichannel, 24 bit, 192 kHz
(uncompressed) via the HDMI interface. Also, again,
the playback software needs to support it.
Just as a final note, unless the source material has the
higher sample rate format, there is no benifit to outputing
at the higher sample rate, especially if the source some
lossy comporessed format (mp3, aac, Dollby and DTS
non-HD formats).

Audio concern with optical out (headphone jack)

According to Apple, unless I am blind, Macbook pros from 2008 cant support 5.1 via toslink in the headphone jack:
(Copied from Apples Tech spec page)
Connect external speakers, headphones, or optical digital audio equipment. The headphone / line output jack accommodates optical digital audio output, analog audio output with a 24-bit, 44.1-192 kHz D/A converter, *digital audio output up to 24-bit stereo and 44.1-192 kHz sampling rate* and supporting encoded digital audio output (AC3 and DTS). For analog headphone / line output a standard audio cable with 3.5mm metal plug should be used. For digital audio, a standard toslink cable with a toslink mini-plug adapter can be used.
Yet I read how people say they get 5.1 working. I don't get it. Apple says only up to 24 bit stereo.

Look in the Audio MIDI Setup utility when connected to the receiver and see if you can select it there. IIRC you must have a DVD encoded in surround sound in order to have the Mac put out the surround audio.

Digital audio input via mini jack/toslink from ADA, monitored via USB audio output... is this do-able? I know digital audio input should be okay but how do I monitor it, apart from using the internal speakers?

Digital audio input via mini jack/toslink from ADA converter, monitored via USB audio output to amplifier... is this do-able? I know digital audio input should be okay but how do I monitor it, apart from using the internal speakers?

You can output audio thru HDMI, with appropriate adapter.
You can use additional cheap external usb audio for monitoring.

Hi there, can anyone tell me how to make make Garageband ignore HDMI as an audio output-device on a 2013 Mac Mini? Now it keeps on prompting me: Do you want want to use the HDMI device (monitor without audio) for audio output? Thanks in advance, Grtz T.

Hi there,
Can anyone tell me how to make make Garageband ignore HDMI as an audio output-device on a 2013 Mac mini i7 using an Apogee jam as an input for bass and a Behringer USB DAC with RCA audio output? Now it keeps on prompting me: Do you want want to use the HDMI device (monitor without audio) for audio output? I'm also suffering massive audio lag issues with the Apogee jam after waking the mini from sleepmode, wich pretty much renders it useless.
Thanks in advance,
Grtz T.

I think the easiest way to do this is to have the EyeTV app running in one user account and sent via HDMI to the TV, and use a separate user account for Screen Sharing. Both logins can be active at the same time and with Lion you can connect via screen sharing to which ever login you need.
With regards to the Mac video resolution changing, when it is not the current input on your AV receiver. This is 'normal', if the Mac sees no signal it drops down the a lower level. What you need is to buy a HDMI Detective Plus which tricks the Mac in to always seeing a signal and hence it will not drop down the resolution. See http://www.gefen.com/kvm/dproduct.jsp?prod_id=8005
The Mac mini does have an IR receiver. This can be used with the EyeTV app, iTunes, and similar. Yes I believe EyeTV would run for prolonged periods quite happily, it is has been around for a long time and had most of the rough edges polished off. However one issue you will have to deal with is that it does not automatically update its program guide data. For this you might have to write or modify an AppleScript. Elgato support or their user forums will be a lot of help.
You can set EyeTV to convert recordings to an iTunes (Apple TV) compatible format and then delete them from EyeTV.
The HDMI Detective should solve your handshaking problems.

I can't get any sound through speakers with monitoring on either - using imac with guitarlink audio interface

I can't get any sound through my speakers with monitoring on - i'm using a behringer usg102 audio interface and garageband is recognizing the input - i just can't hear the output - any suggestions? thanks!

vickyfromla quinta wrote:
i have the usb selected as the input device
and the output?
vickyfromla quinta wrote:
but it won't allow me to set the input level. when i try to move the slider, it automatically moves itself back to the far left side.
that's not the problem:
http://www.bulletsandbones.com/GB/GBFAQ.html#volumesliderdisabled
(Let the page FULLY load. The link to your answer is at the top of your screen)

HELP ASAP! no audio output device installed with hp pavilion dv2500

product name: hp pavilion dv2000
model number: dv2710us
product number:2CE75228LJ
windows vista home premium 32bit
my hp keeps telling that have no audio output device installed and theres the the image for volume with a large red circle with a white x in it.
this is not true because i have contexant (i think that's what it is called) speakers installed.
Lately when i would restart my computer the sound would work intermittently but for the past two days whether i restart my computer or not the image for volume with a large red circle with a white x in it is still there and says no audio output device installed. PLEASE HELP!
This question was solved.
View Solution.

Hi, you can try the below steps to resolve the issue :
Step 1 : Re-install audio drivers from HP Recovery Manager.
1. Click Start, in the Start search box, type recovery . Then click Recovery Manager .
2. In the Recovery Manager window that displays, click Next. On the Reinstall software programs that came with your computer screen, click No, I would like to see other options . Then click Next .
3. In the Reinstall hardware drivers screen, click Yes . Then click Next. On the Welcome to Hardware Driver Reinstaller screen, click Next .
4. In the driver list, select the name of the sound adapter installed on the system. Then click Next. When complete, the Reinstallation is complete screen displays. Click Finish to restart the computer. After the computer starts, test for sound. If the issue persists perform step 2.
Step 2 : Re-install audio drivers manually
If there is no sound and the error still displays, update the audio driver from the weblink below :
http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?softwareitem=ob-63129-1&cc=us&dlc=en&lc=en&...
Step 3 : Restart the Windows Audio Service.
1. Click Start , type services.msc into the search field, and then select services.msc from the list when it becomes available to open the Programs window.
2. Scroll down to and select Windows Audio , right-click to open the drop-down menu, and then click Start .
3. Right-click Windows Audio , click Properties , and then verify that Startup Type is set to Automatic .
Restart the Notebook and check for the issue.
****Click the White Kudos star to say thanks****
****Please mark Accept As Solution if it solves your problem****

Audio output with monitor conneted

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