We've noticed that a small portion of our Mac users are not receiving any Shazam tags despite installation being successful, audio being registered by the microphone in use, and regardless of what music is being listened to.
Why is this happening?
Currently, the Shazam app is only able to identify music that is being played at a particular sample rate. Most users don't re-configure this attribute of their set up, but some do, and this has been causing problems.
What is a Sample rate?
Sample rate is the number of samples of audio carried per second, measured in Hz or kHz (one kHz being 1 000 Hz). For example, 44 100 samples per second can be expressed as either 44 100 Hz, or 44.1 kHz.
44.1 kHz (44100 Hz) is the sampling rate of audio CDs giving a 20 kHz maximum frequency. 20 kHz is the highest frequency generally audible by humans, so making 44.1 kHz the logical choice for most audio material.
Shazam for Mac is currently configured to recognise audio at 44.1 kHz (44100 Hz).
How can I check/edit my audio configuration?
1) Open Finder, select Applications from the Favorites list on the left of the window, then select Utilities:
2) You will need to open the Audio MIDI Setup Utility.
3) Then, please ensure that both the Built-in Microphone and Built-in Output devices are both set to 44100.0Hz/2ch-24bit integer.
Will I always have to monitor my audio settings to use Shazam?
No. The next update to Shazam for Mac will allow successful operation using a much wider range of sample rates, so re-configuring will not be necessary.