An analog input voltage (or current) would be sent to device called an analog-to-digital converter (ADC or A/D). It is then converted to a discrete number and either processed or stored.In practical...
In most states, no. However, in some states they are allowed under certain circumstances. It's typically not within the trial judge's discretion when to and not to admit this evidence. Most states'...
There isn't a device known as a 'timer' in digital audio, but there is a 'clock' or 'wordclock master'. This is a device (usually a rack-mount box) that sends a timing signal to several digital audio...