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Measuring Sampling frequency of a Audio signal

Started by rpawade June 22, 2007
Hello everybody,

I have Denon AVR-2307CI (Audio/Video reciever) with me. I am feeding
graphics card's output to the HDMI input for Denon reciever. Now the
problem is the sampling frequency of the signal is stuck to 48KHz on Denon
screen. 

I tried changing the sampling frequency of signal using sound card's
control panel (Sound cards tried: X-Mystique and M-Audio) but it didnt
help  . Can anyone help me on this issue ?? 
Note: The sound card supprots 44.1KHz, 96KHz frequency rates. 

Again, is there any other way to find out whether the sampling frequency
of signal is changing or not ?? I just want to measure the sampling
frequency of audio signal (wheather it is 44.1,48,96 KHz). But the problem
is I am having HDMI singal which has audio+video. 

Just a drop a email to rpawade@gmail.com

Waiting for your replies..




On 22 Jun, 12:58, "rpawade" <rpaw...@gmail.com> wrote:
> Hello everybody, > > I have Denon AVR-2307CI (Audio/Video reciever) with me. I am feeding > graphics card's output to the HDMI input for Denon reciever. Now the > problem is the sampling frequency of the signal is stuck to 48KHz on Denon > screen. > > I tried changing the sampling frequency of signal using sound card's > control panel (Sound cards tried: X-Mystique and M-Audio) but it didnt > help . Can anyone help me on this issue ?? > Note: The sound card supprots 44.1KHz, 96KHz frequency rates. > > Again, is there any other way to find out whether the sampling frequency > of signal is changing or not ?? I just want to measure the sampling > frequency of audio signal (wheather it is 44.1,48,96 KHz). But the problem > is I am having HDMI singal which has audio+video.
Use a tone generator and record a fixed tone with the different settings. If the settings of the sound card change, the spectrum of the recorded signal should show this as the tone moving between different relative frequencies. Rune