2 Comments for What do sampling rates have to do with audio reciever performance?

• 1. Grumpy Mac  |  February 15th, 2011 at 9:24 am

  Your receiver probably takes analog sound or video and up-converts it to HDMI.

  The more often it samples the analog signal – the more resolution/sound quality the digital version of the signal will be.

  And the reverse its also true when going back to analog.

  Increase the number of bits in each sample – the finer grain the result.

  Increase the number of samples per second – the better the result.

  Most people could not hear the diff with lower sampling rate or lower bits per sample, but audiophiles and engineers love the better/faster electronics.

• 2. Paul F  |  February 15th, 2011 at 9:25 am

  96 kHz and 192 kHz are used with Sony SACD and DVD-Audio disks.
  So if your player is only capable of 44.1KHz (standard CD), then it would not play the others.
  On standard Audio CDs the audio signal is Sampled (chopped) into slices at a rate of 44,100 times per second and then digitized. At that rate, the max frequency of the audio signal that can be recorded is 20 kHz (~1/2 the chopping rate). In this case 20 kHz would be attenuated and would have a large phase shift from the original
  So, if the chopping rate is higher, the max freq is higher and there will be less of a phase shift at 20 kHz.
  The number of bits (16 or 24) are the steps on which the amplitude of the audio waveform is divided into, providing Dynamic Range. 24 bits leads to a much higher Dynamic range.

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