Sample rate capability and design

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flatmax
Posts: 609
Joined: Sat Jul 23, 2016 11:39 pm

Sample rate capability and design

Post by flatmax » Fri Feb 24, 2017 9:15 pm

We are in the final design phase for the sample rates of this sound card.
Because of the second oscillator on the board, we are able to target a lot of sample rates, more then necessary !

Currently we are targeting the following sample rates in Hz :
96000 48000 32000 24000 16000 8000
88200 44100 29400 22050 14700 7350

Matt
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Boss_DR55
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Joined: Sat Feb 25, 2017 8:59 am

Re: Sample rate capability and design

Post by Boss_DR55 » Sun Feb 26, 2017 1:04 am

and what is the bitrate of the input ADC converters?

:idea:

flatmax
Posts: 609
Joined: Sat Jul 23, 2016 11:39 pm

Re: Sample rate capability and design

Post by flatmax » Mon Feb 27, 2017 10:25 am

Do you mean bit rate or bits per word ?
If you mean bits per word, the cs42448 codec is capable of 24 bits per word.

Matt
Check out our audiophile quality crossovers : https://bit.ly/2kb1nzZ
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flatmax
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Joined: Sat Jul 23, 2016 11:39 pm

Re: Sample rate capability and design

Post by flatmax » Sat Apr 01, 2017 7:11 pm

Just confirming that we are now supporting the following sample rates in Hz :
96000 48000 32000 24000 16000 8000
88200 44100 22050

Unfortunately the cs42448 chip driver is not setup at the moment to support these non-standard rates (in Hz) :
29400 14700 7350

Matt
Check out our audiophile quality crossovers : https://bit.ly/2kb1nzZ
Please review the Zero sound card on Amazon USA : https://www.amazon.com/dp/B075V1VNDD
---
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unipiguy
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Re: Sample rate capability and design

Post by unipiguy » Wed Apr 05, 2017 6:35 am

Matt

what's the minimum period size (frame count) that it'll be capable of?

Evanepirels
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Location: Poland
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Sample rate capability and design

Post by Evanepirels » Thu Apr 06, 2017 7:02 pm

I have three channels enabled.

I take it that the "Sample Rate" is the sample rate for the whole setup and that this is divided across the number of channels enabled?

David

flatmax
Posts: 609
Joined: Sat Jul 23, 2016 11:39 pm

Re: Sample rate capability and design

Post by flatmax » Fri Apr 07, 2017 8:00 am

unipiguy wrote:Matt

what's the minimum period size (frame count) that it'll be capable of?
It should be capable of around 1.5 ms latency or less. IT is likely that that is a block of 72 samples which are double buffered.

thanks
Matt
Check out our audiophile quality crossovers : https://bit.ly/2kb1nzZ
Please review the Zero sound card on Amazon USA : https://www.amazon.com/dp/B075V1VNDD
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flatmax
Posts: 609
Joined: Sat Jul 23, 2016 11:39 pm

Re: Sample rate capability and design

Post by flatmax » Fri Apr 07, 2017 8:01 am

Evanepirels wrote:I have three channels enabled.

I take it that the "Sample Rate" is the sample rate for the whole setup and that this is divided across the number of channels enabled?

David
The sample rate is the same for all channels. For example, a 96 kHz sample rate means all input and output channels are sampled at 96 kHz.

thanks
Matt
Check out our audiophile quality crossovers : https://bit.ly/2kb1nzZ
Please review the Zero sound card on Amazon USA : https://www.amazon.com/dp/B075V1VNDD
---
Check out our new forum on github : https://github.com/Audio-Injector

ajp405
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Joined: Thu Jan 04, 2018 4:01 am

Re: Sample rate capability and design

Post by ajp405 » Thu Jan 04, 2018 4:07 am

Hello,

Just wondered if there would be any possibility of pushing the board to run the inputs at the 192 kHz max of the cs42448?

Cheers,

Alan

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