Path: chuka.playstation.co.uk!scea!peter_alau@playstation.sony.com From: Rob Vawter Newsgroups: scea.yaroze.programming.sound Subject: Re: surround Date: Tue, 25 May 1999 10:04:37 -0700 Organization: SCEA Lines: 22 Message-ID: <374AD825.A50E397A@playstation.sony.com> References: <3714CD55.6D04727E@sums.freeserve.co.uk> <371CB2EE.193F83B@playstation.sony.com> <7hc8c7$rfv1@scea> NNTP-Posting-Host: 208.247.15.29 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 4.5 [en] (Win95; U) X-Accept-Language: en And it will not be real-time. Thanks for the backup Toby. - R Toby Sargeant wrote: > On Wed, 12 May 1999 12:05:56 -0400, Lemont Washington wrote: > [...] > >And FYI, no audio system takes in negative > >sound values.... this is not possible.... > > A negative volume will produce an negated (not bit inverted) copy of the > sample. This is exactly what you want for dolby surround. And yes, the > playstation does have support for negative volumes, and assuming that the > yaroze libraries don't support that, then the only way to do surround sound > with a yaroze is with two copies of each dolby-able sample (one being a negated > copy of the other). That's kind of painful when you've only got 512k of sample > ram (less reverb and mixing workspace), but if you really need dolby surround, > then that's really your only choice. > > Toby.