For a note to be in tune, the strobe must be more or less stationary. Strobe tuners show a circular array of LEDs that spin counterclockwise when the note is flat, and clockwise when the note is sharp, spinning faster when the note is farther from the desired pitch on either direction. The build quality is solid & inspires confidence, and I like that the footswitch is a soft relay switch which doesn't make an audible pop when engaged.Īs seen above, the tuner display is different from the typical tuners that use a row of LEDs to indicate whether the note is flat or sharp. I've also had to tune several times in direct sunlight, and am happy to report that the LEDs were still clearly visible. I can safely say that the tuner tracks accurately and grabs onto notes incredibly fast. I have tested this with all of my instruments, including my 5-string basses that sometimes cause issues for tuners when tuning the low B string. Review: Sonic Research Turbo Tuner Mini ST-300įirst things first I do not use any custom temperaments and use it exclusively on the chromatic setting. Moreover, since they do not require any averaging of the input signal, they can respond immediately without delay. Due to the complex nature of the input waveform from a musical instrument, the tuner must take an average of a number of cycles to determine the input signal's pitch before it can drive the display, which makes it unstable especially in cases where there is background noise or harmonics from the instrument.īecause strobe tuners are able to detect tiny differences between the reference frequency and the input signal through the rotating display, they are typically much higher in accuracy compared to needle-type tuners. note is out of tune).Ĭonversely, a needle-type tuner uses a microprocessor to measure the average period of the input waveform, then uses this to drive the needle/row of LEDs. the note is in tune), whereas it will appear to rotate if the frequency is faster or slower than the disk (i.e. The pattern will appear to stand still when the input frequency matches the speed of the rotating disk (i.e. In fact, the FAQ section of the Sonic Research's website is perfect if you'd like to do some further reading on strobe tuning.Ī strobe tuner, simply put, tunes through illuminating a rotating reference disk (a physical rotating disk with black & white patterns on traditional strobe tuners, or an electronically generated reference frequency on modern ones) with a strobe light driven by the input signal. Note: There is plenty of literature online about how exactly strobe tuning works, so please refer to them if you would like a more detailed technical explanation on this specific tuning method.
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