From RAON STUDIO workflows
Prepare lesson and rehearsal audio people can actually use
A useful practice file starts quickly, plays at a comfortable level, has a name that still makes sense next week, and opens on the recipient's device. This workflow separates the original recording from the smaller copy sent to students, members, or collaborators.
The five-step workflow
- Keep the recorder's original file.
- Rename it before making copies.
- Trim only clearly unused time.
- Correct volume conservatively and check the loudest passage.
- Export an MP3 copy for sharing and listen to the download.
Start with the recipient, not the codec
| File purpose | Keep as source | Share as | Check before sending |
|---|---|---|---|
| Spoken lesson note | Phone original or WAV | MP3 around 128 kbps | Words remain clear; no private conversation at start or end |
| Instrument demonstration | Original recording | MP3 around 192 kbps | Attack and decay sound natural; loud notes do not distort |
| Backing track | WAV or highest-quality source | MP3 192-256 kbps | Count-in, ending, and stereo balance are intact |
| Ensemble rehearsal review | Full original | Trimmed MP3 copy | Useful context remains and filename identifies the session |
| Editing handoff | WAV or FLAC | WAV when requested | Sample rate and full duration match the project |
Prepare the file before compression
Name the source first
Names such as `recording-final-2.mp3` become difficult to identify. Use a stable pattern before exporting copies: date, piece or lesson, version, and role. For example, `2026-07-16_scale-tempo80_piano-source.wav` and `2026-07-16_scale-tempo80_piano-share.mp3` make the relationship visible without opening either file.
Trim with context
Remove long silence, setup noise, and unrelated conversation, but keep a count-in and enough room before the first sound. A file that starts directly on a note is frustrating during repeated practice. At the end, leave a short natural tail so reverberation is not cut off. Trimming ten unused minutes often saves more space than lowering bitrate one step.
Adjust volume without chasing maximum loudness
Volume boosting multiplies the existing waveform. It also raises background noise and can push peaks into clipping. Use the smallest adjustment that makes instructions or the track comfortable at a normal device volume. Check the loudest musical passage after boosting, not only the quiet introduction.
Choose a delivery setting
Spoken instruction usually passes at 128 kbps. Mixed speech and instrument audio benefits from 160 or 192 kbps. Music and backing tracks should begin at 192 kbps, with 256 kbps as a useful second candidate when detail matters. A 320 kbps MP3 is larger and is not a substitute for retaining the WAV source.
Convert once from the best available source. Avoid opening a shared MP3, editing it, and exporting another MP3 when the original is still available. Each lossy generation can make cymbals, room ambience, and speech consonants less natural.
Use Audio Trimmer for unused time, Volume Booster for a conservative level change, and WAV to MP3 for the final sharing copy.
The 60-second final check
- Play the downloaded file. Do not rely only on a successful progress message.
- Listen to the beginning. Confirm the count-in, first instruction, and first note are not cut.
- Jump to the loudest section. Listen for crackling or a harsh flattened sound after volume changes.
- Listen to the ending. Confirm the final note and room decay remain complete.
- Read the filename. Make sure the recipient can distinguish date, piece, tempo, and version.
- Check privacy. Remove unrelated names, conversation, or personal information before sharing.
Why the original stays separate
A student may later ask for a slower version, a different excerpt, or a louder copy. An ensemble may need the full rehearsal after receiving only one section. Keeping one source avoids rebuilding from an already compressed delivery file. Store the source and delivery copies in the same folder with clear suffixes, then back up material that cannot be recorded again.
한국어 핵심 정리
레슨 녹음이나 연습 음원은 원본과 공유용 파일을 분리하세요. 원본을 먼저 날짜·곡명·템포가 보이도록 이름 붙이고, 불필요한 무음과 사적인 대화를 자른 뒤 필요한 만큼만 음량을 조절합니다.
말 위주의 파일은 128 kbps, 음악은 192 kbps부터 시작하는 것이 무난합니다. 다운로드한 결과의 시작, 가장 큰 소리가 나는 구간, 끝부분을 직접 들어보고 원본은 삭제하지 마세요.