Grumpy_Mike:
Not. Hi-Fi standard frequency range is usually stated as 20Hz to 20KHz.
Yes I know but can you actually here it? There is a lot of rubbish in the hi-fi world.
There sure is, mostly by ignorant users and unscrupulous sellers that feed off them. However the industry that supports the standards and manufactures that publish performance specifications of their products do faithfully report using real world measurements using standardized testing methods, and 20Hz is used as the lower end value by most quality equipment, some will rate even lower frequency response. Some go down to 0 frequency as some designs can be run in pure DC coupled mode. Flat response from 20Hz to 20Khz has been a basic Hi-Fi standard for many many decades, many quality pre-amps, amps, and receivers can do better. Speaker performance is where the biggest problem lies in trying to get such accurate flat response, and is the limiting part of any quality sound system.
LeftyI'm not going to be hearing it. It's for an experiment.
Is it that one where you "stop" a stream of water?
Do you need a sin wave or square wave? If it is a sin wave then you need an external D/A or filter on a PWM output.