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Masking Models PEAQ (Spreading Functions Used)

Hello All,

I have a query about the PEAQ algorithm (BS.1387 ITU standard) that someone may be able to help me with on here.

I’m trying to trace the origins of the masking models (spreading functions that is), both frequency and time domain spreading, used in PEAQ. Where did these masking models originate and was different time/frequency spreading techniques tested? I’m finding it difficult to trace papers where these spreading functions have been developed, tested etc. Also, is it possible to obtain details on work carried out by the ITU in the lead up to the official standardisation of PEAQ (study groups etc)?

Thanks in advance to anyone who is able to help me, please feel free to email me if my email is a little vague.

Kind Regards,
Dermot Campbell,
PhD Student NUIG Ireland