View Full Version : Changing Audio Sampling Rate

10-01-2001, 02:04 AM
Is there a way to change the audio sampling rate of the Tivo? Ive been trying to make SVCDs (well actually ive figured it out),but the tivo records the audio at a 32k sampling rate, but VCD and SVCD require 44.1k sampled audio. When you re-encode the 32k->44.1k you get very bad distortion, and the audio sounds tinny. Is there a way to change the tivo setup to record audio at 44.1k?


10-04-2001, 07:31 PM
Use ssrc as an external tool. There's a thread (http://www.delphi.com/tmpgenc/messages/?msg=894.1) about this over at delphi forums...

10-06-2001, 12:08 PM
I was talking about physically changing the tivo to record at 44.1k. This is not possible after researching the mpeg audio encoder its fixed at 32k. :(

10-11-2001, 07:06 PM
Where did you find information about the encoder? I've seen lots of information on the decoder, but little to none on the encoder.

10-27-2001, 07:55 PM
I cant recall now, but I found the part number on 9thtees link to inside the tivo, and searched the manufactureres web site until i found a 100 page pdf that outlined the encoder.

10-27-2001, 08:35 PM
I looked into it further and found the Sony MPEG encoder does not do the audio encoding - only video. There's a DSP chip on there that I imagine has been programmed with a MPEG audio encoding algorithm. In which case the bitrate is probably hardcoded in a billion places, and all but impossible to change.

10-28-2001, 11:58 PM
There is a seperate audio chip that processes the audio.. Its not "coded" into a dsp..

11-07-2001, 05:28 PM
What chip does the audio encoding then, if not the DSP? Also, what is the DSP for then?