V6 User Manual 1.00.book - Studio General

Frequencies AnalyzerStereo OscilloscopeMono-SwitcherCedar Audio Restoration Suite for PyramixProsoniqCedar’s range of restoration tools need no introduction here. The following processes are available for Pyramix:Cedar dehiss for PyramixCedar declick for PyramixCedar manual declick for PyramixCedar decrackle for PyramixCedar dethump for PyramixCedar Retouch for PyramixMPEX3 Timestretch and pitch changeOverviewThe MPEX3 algorithm for Pyramix has been developed with the German based company Prosoniq, well known fortheir high quality digital audio algorithms.MPEX stands for Minimum Perceived Loss Time Compression/EXpansion. Incorporating this technology into PyramixVirtual Studio enables users to adjust timing and pitch of existing material with outstanding results and easeof use.AlgorithmTime Scaling (also known as 'Time Stretching', 'Time Compression/Expansion' and 'Time Correction') is the processof changing the length of a sound or sounds without changing its pitch. When a sound is transposed by playing itback at a different speed, e.g. when slowing down the playback speed of a tape recorder, it will play back at a differenttempo but also at a different pitch. While this may be fine when tuning drum loops to match the speed of arecording it will make pitched sounds - like vocals - sound totally out of tune. Therefore it is desirable to provide aprocess that enables the duration and pitch of a recording to be changed independently from each other.Time Stretch and Pitch Change for Film ApplicationsThere are three main categories of Cinema time stretching and pitch changing requirements:1) Conversion of audio rushes from 24 to 25 or 25 to 24 when their associated video or film has to be sped up orslowed down. The main reasons are:a. The shooting has been done with film AND video, so one part of the rushes or the other have to be sped upor slowed down.b. The telecine process to bring the film rushes to video for editing didn't preserve the original speed, intentionallyor by mistake.c. The shooting has been done on video at 25fps (intentionally or by mistake) and has to go to film.Pyramix provides various solutions to this problem:Batch conversionof a whole media folder. Just select all media to stretch/squeeze / pitch change and select the menu Quick Convert> Prosoniq MPEX3 module. All media will be processed in one shot. Media will have to be re-synchronized intime with their video equivalent by using the reference "Clap".In the case where all the media are already synchronized in time with their video equivalent (either manually orbecause they've been properly stamped while recording), then simply send all these media to their original Time-Code (time stamp) in a Pyramix project and select the menu item Project > Stretch / Pitch. All media will be properlystretched/squeezed and their position will be also correctly updated. The new original TimeCode (time stamp)Effects and Plug-Ins : Optional Plug-ins 13 - 252