Grade 10 media technology – Audio Production Quiz

Dynamic microphones are durable and often have directional pickup patterns that reduce background noise, making them a practical choice for busy Kenyan radio studios.

CD audio uses a sample rate of 44.1 kHz, which captures the audio bandwidth needed for high-quality music playback.

CD-quality audio uses 16-bit depth, providing enough dynamic range for music while keeping file sizes moderate.

Gain staging means setting levels carefully at each device (microphone preamp, interface, DAW) so signals are strong but do not clip, keeping noise low.

Phantom power (usually 48V) provides the DC voltage required by condenser microphones' internal electronics; dynamic mics do not need it.

Balanced wiring carries the same signal on two conductors with opposite polarity, which helps reject noise when combined at the input; this is essential for longer cable runs in Kenyan studios.

Latency is the delay caused by converting, processing, and routing audio in digital systems; low latency is important for live monitoring and recording.

Omnidirectional microphones capture sound uniformly from 360 degrees, useful for round-table interviews but less effective at rejecting background noise.

Clipping occurs when an amplifier or digital converter is overdriven and cannot reproduce peaks, producing harsh distortion; preventing clipping is crucial during Kenyan broadcast and recording.

EQ lets you adjust bass, midrange, and treble frequencies to balance elements in a mix or fix problematic tones before broadcast or mastering.

A pop filter diffuses the strong air blasts from plosives so the microphone doesn't overload or record unpleasant pops, common practice in Kenyan studio voiceovers.

A DAW (like Audacity, Reaper, or Pro Tools) runs on a computer and is the central tool for producing audio projects in schools and studios.

Dynamic range measures how much variation a recording or system can handle between soft and loud sounds without unwanted noise or distortion.

Stereo places sounds across left and right channels to give a sense of space, while mono sums everything into one channel—Kenyan newsreaders often use mono, while music is usually stereo.

Foley artists reproduce everyday sounds in a studio to match on-screen actions, widely used in Kenyan film and TV post-production to improve realism.

Normalization scales the entire waveform up or down so the highest peak reaches a set level; it doesn't change the relative differences between loud and soft parts.

Placing the mic near the 12th fret balances the warmth of the body and the clarity of the strings; placing it on the sound hole is usually too boomy for a clear recording.

XLR connectors provide balanced audio and secure locking for professional microphones, and are standard in Kenyan studios and broadcast environments.

Compression controls levels so a voice or instrument sits more consistently in a mix; properly used, it helps broadcasts and music sound professional on Kenyan radio and streaming.

An audio interface connects microphones and instruments to a computer, handling A/D and D/A conversion and offering clean mic preamps for recording lessons and projects.

Impedance is an electrical characteristic; matching microphone impedance to the preamp input helps maintain signal quality and minimizes noise in recordings.

Acoustic treatment (absorbers, diffusers) improves recording quality by controlling reflections; full soundproofing is different and more costly but treatment helps Kenyan school studios significantly.

Panning positions instruments and voices between left and right channels to create a sense of space and separation in a stereo mix.

Video and film typically use 48 kHz because it's the standard for audiovisual sync and broadcast; Kenyan producers and broadcasters follow this convention.

Headroom is the safety margin engineers leave so unexpected peaks don't clip; maintaining headroom is important when recording live events or broadcasts in Kenya.

Audio production involves capturing, editing and mixing sound so it is ready for broadcasts, video, music or other media uses.

A microphone converts acoustic sound waves into electrical signals that can be recorded or amplified.

Condenser microphones use active electronics and typically require 48V phantom power supplied by an interface or mixer.

Balanced XLR cables carry audio on two opposite-polarity wires plus ground, which cancels noise and reduces interference over long runs.

Dynamic mics are durable and less sensitive to distant noise, making them good for interviews in noisy outdoor environments.

CD-quality audio uses a 44.1 kHz sampling rate, which samples audio 44,100 times per second to capture audible frequencies.

CD audio uses 16-bit depth, which provides enough dynamic range for typical music and voice recordings.

Stereo audio has separate left and right channels to create a sense of space; mono uses a single channel the same in both speakers.

A pop filter diffuses bursts of air from plosive consonants, preventing sudden thumps in the recorded signal.

Preamps amplify low-level microphone signals to a stronger line-level signal suitable for recording or further processing.

A DAW is software (like Ableton, FL Studio or Audacity) used to record, edit, arrange and mix audio tracks.

Gain staging ensures each stage in the signal chain has proper levels to maintain quality and avoid clipping or excessive noise.

EQ adjusts levels of particular frequencies (bass, mids, treble) to shape the tone of a sound or reduce problem frequencies.

A compressor lowers the level of loud peaks so quieter parts become more audible, making the overall level more consistent.

Latency is the time delay caused by digital processing and can make monitoring vocal performance difficult if too high.

Phantom power is commonly 48V and supplies the power condenser microphones need for their electronics.

WAV is an uncompressed format that preserves full audio quality, so it is commonly used during recording and production.

Studio monitors aim for a neutral sound so producers can hear the true balance of a mix and make accurate decisions.

Headphones can reveal detail, but mixes should be checked on monitors too because headphones and speakers reproduce sound differently.

Nyquist says sampling must exceed twice the maximum audio frequency to avoid aliasing and accurately reproduce the waveform.

Reverb simulates reflections from surfaces, making a voice sound like it was recorded in a particular room or hall.

Normalization adjusts gain so the highest peak hits a set value, while a limiter actively reduces peaks above a set ceiling to avoid clipping.

RCA cables are unbalanced and common on consumer devices, while XLR and TRS balanced cables reduce noise on professional gear.

Placing the microphone about 6–12 inches away with a pop filter balances clarity and reduces plosives while avoiding excessive room noise.

Selecting a quiet location, keeping the mic close to the speaker and eliminating nearby noise sources are effective first steps to reduce background noise.

A microphone converts acoustic sound waves into an electrical audio signal that can be amplified, recorded or processed.

Cardioid microphones pick up sound primarily from the front and reject sound from the sides and rear, helping reduce background noise.

Phantom power (usually +48V) is provided by mixers or audio interfaces via XLR to power condenser microphone electronics.

Sample rate (measured in Hz or kHz) is how many times per second the audio waveform is measured; higher rates capture higher frequencies.

Bit depth determines how accurately amplitude is represented; higher bit depth increases dynamic range and reduces quantization noise.

DAWs are computer programs (like Reaper, Audacity, or Ableton) used to record, edit, process and mix audio tracks.

Gain staging ensures each device passes signal at optimal levels so the audio stays clean and avoids clipping or excessive noise.

Clipping happens when a signal is louder than the maximum the system can reproduce, flattening peaks and causing distortion.

Pop filters block fast bursts of air from plosive consonants, preventing low-frequency thumps on the microphone signal.

WAV (PCM) is an uncompressed audio format that preserves the full recorded quality and is commonly used for masters.

Reverb pedals or plugins recreate a space's reflections, making sounds appear to sit within a room or hall.

EQ boosts or cuts specific frequency bands to shape tone, reduce muddiness, or enhance clarity.

Limiters sharply control the highest peaks so the signal never goes above the chosen ceiling, protecting against distortion.

Many vintage ribbon mics can be damaged by phantom power; condensers require phantom power, while dynamics and USB mics are different interfaces.

Panning sets a track's position in the stereo field, making it appear left, right, or centered.

Latency is the processing delay in digital systems; high latency can make monitoring and playing along difficult.

Proper impedance relationships help prevent loss of signal strength, frequency response changes, or noise issues.

Audio CDs use 44.1 kHz, which was chosen to accurately capture the audible frequency range up to about 20 kHz.

Compression lowers loud peaks and can raise quieter parts, making the overall level more consistent.

Omni mics capture sound uniformly from every direction, useful for group recordings or ambient pickup.

Soundproofing blocks outside sounds so recordings are not contaminated by street noise, other rooms, or footsteps.

DI boxes allow instruments to connect directly to mixing consoles or interfaces with reduced noise and longer cable runs.

Closed-back headphones isolate the performer so the backing track doesn't leak into the recorded microphone signal.

RMS (root mean square) measures average energy, which correlates with how loud the signal appears to listeners.

Acoustic foam panels reduce high-frequency reflections and flutter echo, improving clarity in small studio rooms.