Sound in a simple Equalizer

Hey there,
A couple of moths ago, I made this Swing app that demonstrates an equalizer.
Here is how it looks :
http://i250.photobucket.com/albums/gg244/varsamakos/screenshot_002-5.png
Now, I want it to be more practical. Ι want it to handle real sound.
I've been searching in forums and the web but I've got none of a specific answer.
I was told to search in Java API to find something. I found this :
http://java.sun.com/docs/books/tutorial/sound/index.html
I reckon this program is dificult for me, so I wanted to ask you is that's the classes I should read.
If anyone knows that part (handle bass, treble, balance etc via java methods), please inform me.
Cheers !
Merry Christmas to all,
Edited by: varsamakos on Dec 26, 2009 2:46 AM

If anyone knows that part (handle bass, treble, balance etc via java methods), please inform me.JavaSound will do nothing more advanced than give you byte-level access to the audio stream... you'll have to decode it into the sample stream yourself and run whatever kind of algorithms are required to calculate the equilization values yourself... JavaSound won't do anything for you.
So, to answer your question... there are no Java methods to obtain the data you're looking for (except for probably a thousand 3rd party Sound libraries that you could use that will do that stuff for you...but you'll have to google for them and figure them out yourself as 3rd party libraries aren't supported by this forum)

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Attachments:
Image00003.jpg ‏77 KB

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type pulse
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type pulse
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type hw
card 0
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type hw
card 0
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type hw
card 1
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type hw
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Alex Person
NI-RIO Product Support Engineer
National Instruments

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Hello! I'm running Arch Linux with i3 and gnome. But I can't controll the sound in i3. Via gnome I can just controll the sound via the gnome ..urr..sound controlling app. I installed alsa-utils and alsa-oss and tried using alsamixer (via terminal) to controll sound in i3, alsamixer finds the USB sound output device (dac); but I can't controll the sound on it, it has no "sound bar". It is not muted, I can listen to music via spotify/cmus and when running speaker tests (speaker-test -c 2) I get the aproriate sound output, there is how ever no sound in VLC/Gnome Media Player.
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aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: ALC892 Digital [ALC892 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 3: Audio [DigiHug USB Audio], device 0: USB Audio [USB Audio]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 3: Audio [DigiHug USB Audio], device 1: USB Audio [USB Audio #1]
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snd_usb_audio 93519 4
snd_usbmidi_lib 18744 1 snd_usb_audio
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snd_seq_device 5300 1 snd_rawmidi
snd_hda_codec_hdmi 24120 4
snd_hda_codec_realtek 114123 1
snd_hda_intel 23989 5
snd_hda_codec 92713 3 snd_hda_intel,snd_hda_codec_realtek,snd_hda_codec_hdmi
snd_hwdep 6556 2 snd_hda_codec,snd_usb_audio
snd_pcm 74812 5 snd_hda_codec,snd_hda_intel,snd_hda_codec_hdmi,snd_usb_audio
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snd 59656 28 snd_timer,snd_pcm,snd_hwdep,snd_hda_codec,snd_hda_intel,snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_seq_device,snd_rawmidi,snd_usbmidi_lib,snd_usb_audio
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ls -l /dev/snd:drwxr-xr-x 2 root root 80 May 19 11:59 by-id
drwxr-xr-x 2 root root 120 May 19 11:59 by-path
crw-rw----+ 1 root audio 116, 7 May 19 11:58 controlC0
crw-rw----+ 1 root audio 116, 16 May 19 11:58 controlC1
crw-rw----+ 1 root audio 116, 18 May 19 11:58 controlC2
crw-rw----+ 1 root audio 116, 22 May 19 11:59 controlC3
crw-rw----+ 1 root audio 116, 6 May 19 11:58 hwC0D0
crw-rw----+ 1 root audio 116, 15 May 19 11:58 hwC1D0
crw-rw----+ 1 root audio 116, 14 May 19 11:58 hwC1D1
crw-rw----+ 1 root audio 116, 13 May 19 11:58 hwC1D2
crw-rw----+ 1 root audio 116, 12 May 19 11:58 hwC1D3
crw-rw----+ 1 root audio 116, 5 May 19 14:06 pcmC0D0c
crw-rw----+ 1 root audio 116, 4 May 19 14:06 pcmC0D0p
crw-rw----+ 1 root audio 116, 3 May 19 14:06 pcmC0D1p
crw-rw----+ 1 root audio 116, 2 May 19 11:58 pcmC0D2c
crw-rw----+ 1 root audio 116, 11 May 19 14:06 pcmC1D3p
crw-rw----+ 1 root audio 116, 10 May 19 14:06 pcmC1D7p
crw-rw----+ 1 root audio 116, 9 May 19 14:06 pcmC1D8p
crw-rw----+ 1 root audio 116, 8 May 19 14:06 pcmC1D9p
crw-rw----+ 1 root audio 116, 17 May 19 14:06 pcmC2D0c
crw-rw----+ 1 root audio 116, 21 May 19 14:06 pcmC3D0c
crw-rw----+ 1 root audio 116, 20 May 19 14:14 pcmC3D0p
crw-rw----+ 1 root audio 116, 19 May 19 11:59 pcmC3D1p
crw-rw---- 1 root audio 116, 1 May 19 11:58 seq
crw-rw----+ 1 root audio 116, 33 May 19 11:58 timer
Let it be noted that before I re-installed arch (minor screw ups : ) ) alsamixer worked flawlessly, I can't remember having done anything different during install
Thank you for all replies!
Last edited by vimes (2012-05-19 12:22:47)

You should be able to control the sound dynamically via simple scripts, e.g.:
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IPod/iTunes Sound Volume problems

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Sound in a simple Equalizer

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