|ACM Codec||"Audio Compression Manager" Codec - A plug-in Coder/Decoder for the Windows®
Multimedia system that enables encoding and decoding of audio wave-forms.
|Bit-reservoir||A technique where adjecent frames can "borrow" data-space from each other.
If there's not enough bandwidth (frame-space specified by the bitrate) it's possible
to store some data in a previous or next frame that has some space left, which is a
"Last resort" for the algorithm before having to degrade the audio-quality any further.
|Frame||Smallest atomic part of a MPEG stream consisting of a header, containing
the frame's properties and data describing "statistical" information
|Frame header||Since MPEG is a "Streaming"-format, where you just can "jump" into without
having to know the beginning or the end, there must be another way found where you can determine
the properties of the stream being processed (ie. bitrate, samplerate, number of channels, etc.).
This can be achieved by splitting the stream into separate packets, called "Frames" each of
which start with a header describing the format of that frame.
|Jog-shuttle||Wheel or knob that enables the user to quickly seek inside a medium
for instance on a video-tape deck or a CD player.
|Latency||The time difference between data-input and data-output in a decoder.
The MPEG algorithm has the option to store some data from the current frame into
an adjecent frame if the current frame-space is not sufficient (See Bit-reservoir).
This has nothing to do with the speed of the processor, since modern-day computers
and DSP's (Digital Signal Processors) are fast enough to process
processor-power consuming algorithms like MPEG.
|PCM||Pulse Code Modulation - The unencoded/uncompressed digital representation
of an analog waveform
|"Waved" MP3||A MPEG Audio Layer III encoded file with a "RIFF/WAV"-header and the ".wav"
extension, so it can be played by (older) Windows wave-players and programs
that support wave files.
The target system must have the right ACM-codec installed on the system
to be able to play these waves however.
Also take a look at my little utility "WaveMP3" which turns MP3's
into MP3 encoded WAV's and back.