electroacoustics
Audio engineering fundamentals
Electroacoustics is the branch of physics and engineering concerned with converting sound into electrical signals and vice versa.
The field encompasses microphones, loudspeakers, hearing aids, and audio recording technology—anything that transforms acoustic energy to electrical or electrical to acoustic.
She specialized in electroacoustics, designing concert hall speaker systems.
Energy form converter
- microphoneAudio input device
- loudspeakerSound amplification device
- amplifierSignal-strengthening electronic device
- hydrophoneSubmersible sound sensor
pickup · condenser · piezoelectric · ribbon microphone · audio interface · preamplifier · analog-to-digital · sound card
Mathematical manipulation of waveforms
- filterPorous separation device
- equalizationMaking things uniform
- compressionForcing into smaller space
- noise reductionDecreasing auditory interference
spectral analysis · sampling · quantization · clipping · distortion · gain · dynamic range · signal-to-noise
Facility for capturing audio
- live soundUnrecorded audio from performers
- public addressBroadcast communication system
- hearing aidEar-worn sound amplifier
- sonarUnderwater detection by echoes
ultrasound imaging · noise cancellation · speech recognition · broadcast · teleconferencing
Spatial distribution of audio
- frequency responseOutput versus input frequencies
- waveformGraphed oscillation pattern
- resonanceAmplified oscillation at natural frequency
- reverberationProlonged reflected sound
absorption · diffraction · harmonics · standing wave · sound pressure level · near field
Tenth of a bel
- oscilloscopeVoltage waveform display device
- calibrationAdjusting for measurement accuracy
- pink noiseSpectrum-weighted random signal
- white noiseConstant random sound
transducer
Energy form converter
- microphoneAudio input device
- loudspeakerSound amplification device
- amplifierSignal-strengthening electronic device
hydrophone · pickup · condenser · piezoelectric · ribbon microphone · audio interface · preamplifier · analog-to-digital · sound card · studio monitor
signal processing
Mathematical manipulation of waveforms
- filterPorous separation device
- equalizationMaking things uniform
- compressionForcing into smaller space
noise reduction · spectral analysis · sampling · quantization · clipping · distortion · gain · dynamic range · signal-to-noise · bandwidth
recording studio
Facility for capturing audio
- live soundUnrecorded audio from performers
- public addressBroadcast communication system
- hearing aidEar-worn sound amplifier
sonar · ultrasound imaging · noise cancellation · speech recognition · broadcast · teleconferencing
sound field
Spatial distribution of audio
- frequency responseOutput versus input frequencies
- waveformGraphed oscillation pattern
- resonanceAmplified oscillation at natural frequency
reverberation · absorption · diffraction · harmonics · standing wave · sound pressure level · near field
decibel
Tenth of a bel
- oscilloscopeVoltage waveform display device
- calibrationAdjusting for measurement accuracy
- pink noiseSpectrum-weighted random signal