Picking Vocal Microphones – Understanding Technical Specifications

This article gives an outline on five significant estimates that are normally recorded in amplifier particular sheets: recurrence reaction, affectability, impedance, self clamor level, and sign to commotion proportion. Understanding these specs can help when attempting to settle on the best mouthpiece to buy for a particular application.

Recurrence Response

Recurrence reaction estimates how a receiver responds to various sound frequencies. An ideal “level” reaction (equivalent affectability) mouthpiece would react similarly to all frequencies inside the perceptible range. This outcomes in a more exact propagation of sound and creates the most flawless sound. Truly even mouthpieces which are promoted as having a “level reaction” can veer off to some degree at specific frequencies. Regularly spec sheets will list recurrence reaction as a reach like yoga mat thickness mm, implying that the mouthpiece can replicate sounds that fall inside that range. What this doesn’t clarify is the manner by which precisely the different individual frequencies will be repeated. A few receivers are deliberately intended to react contrastingly to specific frequencies. For instance, instrument amplifiers for bass drums are by and large designed to be more receptive to bring down frequencies while vocal receivers would be more receptive to the recurrence of a human voice.

When in doubt of thumb, condenser receivers have compliment recurrence reactions than dynamic. This implies that a condenser would will in general be the better decision if exactness of sound propagation is the principle objective.


Receiver affectability estimates how much electrical yield (estimated in “millivolts” mV) is created for a given sound pressing factor input. Commonly when estimating amplifier affectability the mic is set in a reference sound field where a sound pressing factor level (SPL) of 94 dB (1 Pascal) at 1000 Hz is kept up at the receiver. (A few merchants like Shure utilize 74 dB 0.1 Pascal). The differentiation is that 94 dB SPL is the run of the mill sound force of somebody talking twelve inches away while 74dB SPL would be a similar speaker one inch away. An ordinary condenser mouthpiece may have a worth recorded either like “7mV/Pa” or – 43dBV in the specialized determination. These two qualities mean exactly the same thing – they’re simply communicated in an unexpected way.