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Old 5th June 2011, 09:35 AM   #1
supra is offline supra  Australia
diyAudio Member
 
Join Date: Jul 2004
Location: Margaret River West Australia
Default JRiver/I2S/TDA1541

Just for the nostalgia , and because it was possible I connected a teradac 24/96 USB-spdif up to the I2S inputs of an old 1541 dac I had in my junk pile, using the I2S connector on Teradak of course.
Worked first time, and has that "nice" 1541 sound, a bit dated ,but better than the spdif input.
The interesting thing is when I play a DAD 24/96 through JRiver the 1541 passes it ok. The JRiver says it is outputing 96k, but all my other dacs will only output up to their limit , which for the 1541 is 16bit/44.1Khz.
It doesn't sound like 24bit/96k , can the 1541 downsample?
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Old 5th June 2011, 09:53 AM   #2
Previously: Kuei Yang Wang
 
Join Date: Nov 2002
Hi,

Quote:
Originally Posted by supra View Post
The interesting thing is when I play a DAD 24/96 through JRiver the 1541 passes it ok. The JRiver says it is outputing 96k, but all my other dacs will only output up to their limit , which for the 1541 is 16bit/44.1Khz. It doesn't sound like 24bit/96k , can the 1541 downsample?
The TDA1541 cannot down-sample or do any manipulation. It can operate up to 384KHz sample rate and it will load and convert the 16 most significant bits of an I2S bitstream that has a wordlength exceeding 16 Bit.

So you can (for example) feed the TDA1541 directly a 192KHz/24Bit datastream and you get 192KHz sample rate, but only 16 Bit...

Ciao T
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Old 5th June 2011, 02:08 PM   #3
supra is offline supra  Australia
diyAudio Member
 
Join Date: Jul 2004
Location: Margaret River West Australia
Quote:
Originally Posted by ThorstenL View Post
Hi,



The TDA1541 cannot down-sample or do any manipulation. It can operate up to 384KHz sample rate and it will load and convert the 16 most significant bits of an I2S bitstream that has a wordlength exceeding 16 Bit.

So you can (for example) feed the TDA1541 directly a 192KHz/24Bit datastream and you get 192KHz sample rate, but only 16 Bit...

Ciao T
Thank you for a complete and interesting answer.
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