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Broadcast Audio Standards
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Audio Metering
The visual representation of audio levels. Essential in broadcast to maintain consistent levels and avoid over-modulation.
Peak Normalization
The process of adjusting the audio signal so the maximum peak hits a certain level, crucial to prevent distortion and maintain consistent audio levels across broadcasts.
Compression
Reduces the dynamic range of audio, ensuring the loud and soft parts of a broadcast are more even in volume. Important to prevent large volume jumps for listeners.
Stereo Imaging
Involves creating a sense of space and positional cues in two-channel audio. It's important for an immersive and natural-sounding broadcast.
Sample Rate
The number of samples of audio carried per second. Higher sample rates can capture higher frequency content, important for the fidelity of the broadcasted audio.
Bit Depth
Determines the dynamic range and signal-to-noise ratio of a digital audio signal. Higher bit depths are important in broadcast for capturing subtle nuances and reducing quantization noise.
Audio Leveling
The process of adjusting the levels of different audio elements for consistency. Key in broadcast to ensure balance and prevent sudden jumps in volume.
Frequency Response
Describes the range of frequencies a broadcast system can reproduce. Important for ensuring audio quality and intelligibility of the broadcast.
Phase Correlation
Measures the time difference and alignment between stereo channels. Crucial for ensuring a coherent soundstage and avoiding phase cancellation in broadcasts.
Dynamic Processing
Encompasses techniques like compression and expansion to manage the dynamic range of an audio signal, pivotal for a smooth listening experience in broadcasts.
Audio Codecs
Used for compressing and decompressing digital audio data. Essential in broadcasting for managing bandwidth and storage while maintaining audio quality.
Loudness Standards
Refers to the accepted average audio levels to ensure consistent sound across different platforms and programs. It is important to prevent viewer fatigue and meet regulatory compliance.
Signal-to-Noise Ratio (SNR)
The ratio between the desired signal and the background noise, which is vital for maintaining audio clarity and reducing listener fatigue in broadcast environments.
Broadcast Mixing
The art of balancing and combining multiple audio sources live or in post-production. Integral for delivering a polished and professional sounding broadcast.
Acoustic Treatment
Refers to the modification of an environment to control sound reflections and reverberations. It is important in broadcast studios to ensure clear and accurate audio reproduction.
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