Re: Digital Tone Control, and Audio Switches

On Sat, 06 Jun 2009 16:32:56 -0500, Vladimir Vassilevsky
<antispam_bogus@xxxxxxxxxxx> wrote:



lighthouseman wrote:

I'm looking for a digitally controlled audio (volume/bass/treble) tone
control IC.
The requirements are to work at line level, in stereo preferably, and
be able to be controlled by a microcontroller.

I would suggest going full digital. The Digital Audio Processors (DAPs)
are available from all major vendors such as TI, ST, AKM, AD, Cirrus
logic, NXP, etc. Some of them have the integrated audio codec, but most
require the external codec.

I like TAS3103 from TI.

I looked at the TDA1524A from Philips, but it requires external pots,
which I suppose could be digital pots, but I'm sure there must be a
bus controlled Tone Control IC out there. Any suggestions?

Also, I'm looking for suggestions for chips to build an 8 x 8 line
level audio switch.

Use the generic HC4053 or like.

Some chips I've looked at so far are MAX4586/4587,
or MAX4550 etc. Any suggestions?

Don't use Maxim parts. Anyone who designed in any parts from Maxim had
to regret about it later. AD has the nice selection of high performance
switches/muxes, but you generally don't need them for audio.

For his application, Maxim would be acceptable. He's not going to
manufacture a billion of the things. If he can get enough for the
prototype, he's made a lifetime buy. ;-)
.

Relevant Pages

  • Re: Help to clear old audio card conflict please
    ... Which, of all things, in this case, is not controlled by the slider volume control on the PMMixer for CD-ROM. ... I've not tried the complete test run for the UNIMIX command line operation, nor have had the time yet after all this to test the port I/O and log it to a file with UNIMIX to see what the heck is going on for port mishmash yet. ... The wide audio output cable connection for the CD-ROM is plugged into the TAD pin socket on the SBLive 5.1 card! ...
    (comp.os.os2.multimedia)
  • Re: Id like to get rid of pulseaudio but ... (Gene Heskett)
    ... Do I have to restart X?, reboot?, locate a virgin (there is a very short ... Why can't all of this audio crap have a 'service audio restart'? ... mixer control "Mic" or mixer control is no combination of switch/volume. ... channels, finding the HDINTEL stuff I don't use first. ...
    (Fedora)
  • Re: Help to clear old audio card conflict please
    ... Which, of all things, in this case, is not controlled by the slider volume control on the PMMixer for CD-ROM. ... I've not tried the complete test run for the UNIMIX command line operation, nor have had the time yet after all this to test the port I/O and log it to a file with UNIMIX to see what the heck is going on for port mishmash yet. ... The wide audio output cable connection for the CD-ROM is plugged into the TAD pin socket on the SBLive 5.1 card! ...
    (comp.os.os2.multimedia)
  • Re: No sound from Line In
    ... Connect one end of the cable to the speaker output jack (lime) ... Go to the Control Panel and start the Sound and Audio Devices applet. ...
    (microsoft.public.windowsxp.hardware)
  • Re: I wasnt quite sure of the topic so I am posting for help/supp
    ... exclamation icon under the section called "Sound, Video and Game controllers". ... expand the list and right click on "Media Control Devices". ... CD Mic Line and Stereo (disincluding recording volume). ... |> Control Panel> Sounds and Audio Devices. ...
    (microsoft.public.windowsxp.help_and_support)