Megaclite: SPL response without DSP
Below a typical frequency response of a Megaclite earpiece is shown. The origins of the various peaks are explained:
Why do MEMS speakers have such a high THD peak at 10 kHz?
The THD peak at ~10 kHz stems mainly from a mode of the MEMS at 21 kHz. When the MEMS is excited with 21kHz it resonates strongly and produces movement and subsequently a higher SPL. Due to small inherent non-linearities in the movement of the MEMS, 10.5 kHz will produce a small frequency component at 21 kHz which resonates and
How to measure Ganymede MEMS microspeakers
How USound measures Ganymede MEMS speakers USound specifies and measures Ganymede MEMS speakers, Achelous and Adap, in both acoustic domains: in the Baffle and in the Coupler (artificial ear). For both setups, proprietary measurement adapters are used to fit the standardised setup. In the case of the baffle, the measurement adapter places the MEMS speaker with appropriate sealing inside the
Why is “baffle” the standardised measurement setup for speakers?
The baffle measurement is standardised in the IEC 60268-5 [1], even though in everyday applications, no baffle is present. So why does the industry rely on this particular setup? There is one main reason: it is universal. The baffle is basically just a massive wall which separates back and front side of the speaker. The IEC-baffle is defined in a