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The TIA also provides two channels of one-bit sound. Each channel provides for 32 pitch values and 16 possible bit sequences. There is a 4 bit volume control. [4] Lastly, the TIA has inputs for reading up to four analog paddle controllers using potentiometers and for two joystick triggers. [4]
This provided 8-bit sampled monaural sound sampled at the 22.25 kHz horizontal blanking rate. General purpose 6522 outputs could mute the sampled sound, or set its volume to one of 8 levels of attenuation. A square wave generator was included on the 6522. One of its two timer circuits could be set to toggle the mute output periodically.
Latency refers to a short period of delay (usually measured in milliseconds) between when an audio signal enters a system, and when it emerges.Potential contributors to latency in an audio system include analog-to-digital conversion, buffering, digital signal processing, transmission time, digital-to-analog conversion, and the speed of sound in the transmission medium.
In some sets made before 1948, this was filtered out, and the sound IF of about 22 MHz was sent to an FM demodulator to recover the basic sound signal. In newer sets, this new carrier at the offset frequency was allowed to remain as intercarrier sound , and it was sent to an FM demodulator to recover the basic sound signal.
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It reduced the size of the hitherto bulky players designed for use in moving cars, in particular. Small rubber shock absorbers are still used, but are less effective than the larger pre-1995 ones. When first introduced, 3 seconds was the maximum buffering time.
Long packet times increase latencies and require more buffering. A range from 125 μs to 4 ms is defined, though it is recommended that devices shall adapt to packet time changes and/or determine packet time by analyzing RTP timestamps. Packet time determines RTP payload size according to a supported sample rate. 1 ms is required for all devices.