Pulse Width Modulation
Sound Modulation
AIF (Music Software)
Oscillator
Exploring Synthesis Techniques in Software
Digital Audio
Audio Formats
Exploring Audio Formats and Standards
Sound Modulation 
Sound
modulation refers to the process of varying a sound signal's properties to achieve a desired auditory effect
...include: Amplitude Modulation (AM) Frequency Modulation (FM) Phase Modulation (PM) Ring Modulation
Pulse Width Modulation (PWM) Amplitude Modulation Amplitude Modulation (AM) involves varying the amplitude of a sound wave
...
AIF (Music Software) 
The format supports various audio encoding methods, including: PCM (
Pulse Code
Modulation) ADPCM (Adaptive Differential Pulse Code Modulation) MP3 (MPEG Audio Layer III) AAC (Advanced Audio Codec) File Structure The AIF file structure consists of several key components:
...
Oscillator 
Pulse Wave Oscillator: Similar to square waves but with variable duty cycles, allowing for more tonal variety
...FM Synthesis: Frequency
modulation is used to create complex harmonic structures by modulating one oscillator with another
...
Exploring Synthesis Techniques in Software 
Pulse Combines granular synthesis with other sound design techniques
...several primary synthesis techniques used in music production: Subtractive Synthesis Additive Synthesis Frequency
Modulation Synthesis Wavetable Synthesis Granular Synthesis Physical Modelling Synthesis 2
...
Digital Audio 
1970: The first digital audio recording was made by the PCM (
Pulse Code
Modulation) method
...
Audio Formats 
Extension Bit Depth Sample Rate Typical Use PCM (
Pulse Code
Modulation)
...
Exploring Audio Formats and Standards 
Some key audio standards include: PCM:
Pulse Code
Modulation, the standard method for digital audio representation
...
Waveforms 
Pulse Wave: A variation of the square wave, where the
width of the high state can be adjusted, allowing for a range of tonal colors
...See Also Amplitude
Modulation Fourier Transform Sound Wave Autor: LiamJones
...
Digital Recording 
highlights key developments in the evolution of digital recording: 1960s: The first digital audio recordings were made using
pulse-code
modulation (PCM)
...
Exploring Digital Audio 
1970 Introduction of the PCM (
Pulse Code
Modulation) standard
...
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