Impulse response is a reaction to the pulse of the minimum possible duration. For the base level, 72 dB SPL (live performance of several instruments with vocals without amplifiers with acoustics) is selected.When you select another base level, the dependence varies slightly and is suitable for almost all levels.Įxamples of graphics application in practice F.A.Q. The perception of the number of low frequencies depends on the volume according to the curves of equal loudness.

When listening to headphones at a low volume, the perception of recoil in the low frequency range decreases, and when you listen to it at a high volume, it increases.Īccording to this graph, you can estimate at what volume the headphones will be perceived more flat. of the headphones when listening to music with a different loudness relative to the natural level. The graph shows the change in the perception of the frequency response F.A.Q. When connected to an amplifier, the frequency response can change F.A.Q.Īccording to the frequency response curve, it is possible to calculate the width of the frequency range F.A.Q.

of the external noise and noise isolation headphones. Subjective 'flatness' is perceived differently from external conditions: the volume level F.A.Q. The frequency response of the headphones can be represented as the selected equalizer setting in the player, applicable to headphones with a flat sound. the shows the balance of the frequency of the headphones (reproduced frequency spectrum) in dB. You can help with translation via the feedback or select text and press Ctrl+Enter (anonymously). The difference in amplitudes of 6 dB is equivalent to a twofold ratio of signal levels. with an appropriate frequency response correction. The microphone is calibrated to 45 kHz F.A.Q.

The frequency response plot is constructed from the spectrum of the impulse response.ĭuring the measurements, a special amplifier was used with zero total output impedance over the entire frequency range, which required no compensation for the amplitude response F.A.Q. The frequency response in RAA is obtained through the reproduction and analysis of a special noise signal with the subsequent generation of an impulse response. is used to eliminate the interference of waves due to the use of a 'point' microphone. For 0 dB, 20 μPa is assumed.īy the sensitivity of the headphones, you can predict the volume level developed by the headphones at any chosen frequency with the known supply voltage to the headphones from the amplifier. with the specified sound pressure dB SPL of 1 V RMS. is determined by the amplitude-frequency response curve F.A.Q.

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