Fidelity is determined by how little the numerical signal is changed by added noise, distortion, or inadequate sampling in processing and transfer (44.1 kHz
sampling, a signal-to-noise ratio about 90 dB, and harmonic distortion less than 1 % are common in the music industry today).
melanostictus were recorded using a directional microphone (Sennheiser ME66 with K6 power module) connected to a digital audio recorder (Marantz PMD 661, 16-bit, 44.1 kHz
) placed approximately 1 m from subjects, from 20:30 to 23:30, at ambient temperature 19-26AdegC, and relative humidity 75-90%.
A sampling frequency of 44.1 KHz
and an amplitude factor of -5dB (to avoid distortion at peak level) was used to generate all the stimuli.
Frequency Response (over Bluetooth) : 20 Hz-20,000 Hz (44.1 kHz
Sampling)/20 Hz-40,000 Hz (LDAC 96 kHz Sampling, 990 kbps
Often, the local recordings were done on incompatible DAWs or even basic audio formats--think AAC versus MP3 versus Broadcast WAV (BWAV) files--and sometimes one musician might accidentally record at 44.1 kHz
instead of the more widely used professional 48 kHz sample rate.
Low--500kbps h.264/mp4 file, 128kbps/ 44.1 khz
The audio signal mostly has Sampling Frequency of about 32 kHz, 44.1 kHz
, and 48 kHz.
Supported sample rates of 44.1 kHz
, 48 kHz (default), and 96 kHz
The DynamicMedia format preserves full fidelity 16 bit / 44.1 kHz
audio with a 20 times reduced data set and streamed at 70 kb per second without loss of quality.
We select 100 samples of six audio sampling rates (8, 11.025, 16, 22.05, 32, and 44.1 KHz
), which are 5 min long.
The operation frequency of the USM is 44.1 kHz
and was determined experimentally.