[Asterisk-Users] Stupid question about recording prompts

[TC]

>>You should record them directly in 16kbit/8000hz/mono,  converting them
down from a higher sample rate >>will add quantization noise into the file.
For all those that are curious about quantization noise

quantization noise: Synonym quantizing noise.
quantizing noise: Noise caused by the error of approximation in
quantization.
Note: Quantizing noise is dependent on the particular quantization process
used and the statistical characteristics of the quantized signal. Synonym
quantization noise.

Where
http://www.atis.org/tg2k/_noise.html
noise: 1. An undesired disturbance within the frequency band of interest;
the summation of unwanted or disturbing energy introduced into a
communications system from man-made and natural sources

http://www.atis.org/tg2k/_quantization_noise.html
quantization: A process in which the continuous range of values of an analog
signal is sampled and divided into nonoverlapping (but not necessarily
equal) subranges, and a discrete, unique value is assigned to each subrange.