![]() When looked at through an oscilloscope, it's waveform is generally of a sinusoidal, square or sawtooth shape. High licensing costs have kept this audio codec from the mainstreamĪC:- Acronym for Alternating Current, which is electrical current where electrical charge will travel in one direction, then change into moving in the opposite direction. The more 'bits' a converter has, the greater the resolution of the sampling process.ĪAC (.aac) - "Advanced Audio Coding", next generation audio codec developed by Fraunhofer that seeks to preserve audio quality at lower bitrates. Circuit for converting analogue waveforms into a series of equally spaced numerical values represented by binary numbers. The quality of conversion is highly dependent on the amount of bits used in the conversion process, hence a 24 bit converter will achieve a much more accurate resolution of the sound than say, an 8 bit converter. A converter is a piece of circuitry which achieves this. See also "synthesiser"/"envelope generator"Ī/D Analog to Digital Conversion: An electronic device that converts analog signals from a microphone or line level source into digital signals (digitizing or sampling them) so they can be stored to any number of storage media like hard drives, ADAT, computer ROM chip, or processed in a sampler, digital signal processor or digital recording device.Ī/D Conversion / Converter: - Analogue to Digital conversion. Here the time clock utilizes a square wave signal, which runs at the same sampling rate as the main audio signal.Ī.D.S.R.: - Attack, Decay, Sustain, Release. More expensive professional systems however, tend to use a discrete word clocking system, utilizing the "BNC" standard connection. However this can make the digital audio stream prone to "Jitter" (see above). ![]() In "home" digital recording setups, the word clock is often an embedded part of the digital DataStream (the "S/PDIF" and "AES/EBU" interface standards are an example of this). Inferior in quality to 16 bit sound.Ī Cappella: - Music which consists only of voice or voices, and is bereft of any instrumental accompaniment.Ī high pass filter utilizes capacitors, as the impedance of a capacitor decreases for HIGH frequencies, this enables it to ensure the passage of higher frequencies, and stop the passage of more powerful, lower frequency signals which may blow the poor little tweeter unit to smithereens!Ī Word Clock is an essential part of any digital recording system, measuring digital time in terms of digital audio "word" which is a "sample". When the playback material is recorded at a high sample rate (44.1Khz), the sound produced is indistinguishable from that of an audio CD.Ĩ bit sound: Audio based on a sample of a sound wave using 256 increments. 16 bit sound: Audio sampled using a 65,536 increment scale. ![]()
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