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Saturation Sound Pressure Level (SSPL)

The saturation sound pressure level (SSPL) describes the maximum output an amplifier can produce before it becomes unstable. In air conduction hearing aids, the SSPL output commonly varies across frequency and can therefore be plotted as a frequency response curve on a horizontal axis that reflects the limits of the hearing aid receiver or is determined by the regulatory standard with which the hearing aid is being measured. It is relevant to audiology and communication sciences as it is a technical specification of a hearing aid that determines its suitability for a given hearing loss. A hearing aid’s SSPL is the maximum decibel sound pressure level (dB SPL) value that it can produce, and this will vary between manufacturers and models. Larger, behind-the-ear hearing ...

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