1. What is BPM and Semitone Calculation?

The BPM (Beats Per Minute) to milliseconds conversion calculates the duration of one beat in milliseconds. Semitone calculation measures the musical interval between two frequencies in semitones (half-steps).

2. How Does the Calculator Work?

The calculator uses two equations:

Where:

• \( ms \) — Delay time in milliseconds
• \( bpm \) — Tempo in beats per minute
• \( n \) — Number of semitones between frequencies
• \( f1 \) — First frequency in Hertz
• \( f2 \) — Second frequency in Hertz

Explanation: The first equation converts tempo to time interval. The second calculates the logarithmic frequency ratio in semitones.

3. Practical Applications

Details: Used in music production for delay timing, pitch shifting, and tempo synchronization. Essential for sound design and audio engineering.

4. Using the Calculator

Tips: Enter BPM (must be positive) and two frequencies (both must be positive). Results show delay time per beat and semitone interval between frequencies.

5. Frequently Asked Questions (FAQ)

Q1: Why 60000 in the BPM formula?
A: 60000 converts minutes to milliseconds (60 seconds × 1000 ms).

Q2: What does a semitone represent?
A: One semitone equals a half-step in musical terms (12 semitones = 1 octave).

Q3: Can I calculate negative semitones?
A: Yes, negative values indicate f2 is lower than f1.

Q4: What's the relationship between BPM and Hz?
A: BPM is tempo, while Hz is frequency. 120 BPM = 2 Hz (2 beats per second).

Q5: How precise are these calculations?
A: Mathematically exact, though musical perception may vary slightly.