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The word pulse in the term pulse-code modulation refers to the pulses to be found in the transmission line. This perhaps is a natural consequence of this technique having evolved alongside two analog methods, pulse-width modulation and pulse-position modulation , in which the information to be encoded is represented by discrete signal pulses of ...
Adaptive differential pulse-code modulation (ADPCM) aptX / aptX-HD: aptX 1989 Unknown Unknown [28] Digital Theater Systems: DTS 1990 8% 6% [29] [30] Master Quality Authenticated: MQA 2014 Unknown Unknown Sub-band coding (SBC) MPEG-1 Audio Layer II: MP2 1993 Unknown Unknown [31] Musepack: MPC 1997 SBC: SBC 2003 Unknown Unknown [32]
Linear pulse-code modulation (LPCM, generally only described as PCM) is the format for uncompressed audio in media files and it is also the standard for CD-DA; note that in computers, LPCM is usually stored in container formats such as WAV, AIFF, or AU, or as raw audio format, although not technically necessary. FFmpeg; Pulse-density modulation ...
The algorithm was first proposed by Stuart P. Lloyd of Bell Labs in 1957 as a technique for pulse-code modulation. Lloyd's work became widely circulated but remained unpublished until 1982. [ 1 ] A similar algorithm was developed independently by Joel Max and published in 1960, [ 3 ] which is why the algorithm is sometimes referred as the Lloyd ...
Triangular functions are useful in signal processing and communication systems engineering as representations of idealized signals, and the triangular function specifically as an integral transform kernel function from which more realistic signals can be derived, for example in kernel density estimation.
G.722 [4] is an ITU-T standard wideband speech codec operating at 48, 56 and 64 kbit/s, based on subband coding with two channels and ADPCM coding of each. [5] Before the digitization process, it catches the analog signal and divides it in frequency bands with quadrature mirror filters (QMF) to get two subbands of the signal.
Differential pulse-code modulation (DPCM) is a signal encoder that uses the baseline of pulse-code modulation (PCM) but adds some functionalities based on the prediction of the samples of the signal. The input can be an analog signal or a digital signal .
Signal-to-quantization-noise ratio (SQNR or SN q R) is widely used quality measure in analysing digitizing schemes such as pulse-code modulation (PCM).