What is Linear Pulse Code Modulation (LPCM)?

What does LPCM stand for?

Linear Pulse Code Modulation (LPCM) is a way for Digitally Encoding uncompressed audio inFormation, where audio Waveforms are represented by means of a series of amplitude values from a pattern on a linear scale wherein the values are proportional to the amplitudes, instead of being the log of the amplitudes. This way that the values are linearly quantized, as a result approximating a very big set of possible values with a surprisingly small set of values that can be Integers or even discrete symbols.

LPCM is also used as a collective connection with audio formats that occur due to using this enCoding approach. Pulse Code Modulation (PCM), a extra standard Method of encoding, is frequently used to describe LPCM. LPCM is capable of very high Throughput.

What Does Linear Pulse Code Modulation Mean?

The sampled audio Signals in LPCM are represented by way of considered one of a fixed quantity of values inside the PCM. LPCM audio is coded the use of a aggregate of values including:

• Resolution or sample sizes
• Frequency of sample Charge
• Signed or unsigned numbers
• Number of channels, together with monaural, stereo, quadraphonic, or Interleaving
• Byte order

Formats that use LPCM facts encompass AES3, Au File layout, uncooked audio, WAV, AC3 (Dolby Digital), MPEG-audio, and audio intercHange Record format (AIFF). LPCM is also a part of the DVD (1995) and Blue-Ray (2006) sound and video recording requirements, and is defined as part of some of other Digital Video and audio Storage formats.