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Performance Controls

Length Sweep

The Length  Sweep  control  scales  the duration  of  audio cycled in  the 
loop  engine.    When  the  Length  Sweep  parameter  is  increased,  the 
duration  is  reduced,  thus  accelerating the  repeat  rate.    When  set  to 
100%,  the loop  duration  is  four  times shorter,  so if  you  are  looping a 
1/2  note  segment  and  raise  the  control  to  100%,  the  loop  gradually 
shortens an eighth note segment.   (yes, it’s cool!)

Decreasing  Length  Sweep   has  the  opposite  effect  and  makes  the 
segment longer,  effectively slowing the beat repeater  rate.   When  set 
to  -100% the loop duration  is  four  times longer.    If  you  are looping a 
1/4 note section and lower  the Length  Sweep to -100%, Buffre cycles 
through a full measure of audio.  

The Buffre  display normally depicts a  full  measure of  audio stored in  the loop engine, 
however  if the duration exceeds the scope of the display, you will  only  one measure will 
be  visible  and the  buffer  position  indicator  will  stop until  playback  cycles  back  to  the 
beginning of the loop.  

Bit Crush

Bit Crush is a  type of digital  distortion  which  can be applied to audio in  the Buffre loop 
engine.    Increasing  the  control  intensifies  the  amount  of  distortion  applied.    The  Bit 
Crush Amount parameter is mapped to the mod wheel, so this effect can be scaled in as 
part of the performance or recorded to a note clip in the Reason Sequencer.

In  actuality,  the downsampling  treatment  in  Buffre  is  a  sample  dump or  skip.   As  the 
amount  is  increased,  more  samples  are  skipped,  effectively  reducing  the  sample 
playback  rate.  One minor  issue that arises from this process is the fact that there are a 
different  number  of  samples  being  dumped  depending  on  the  system  sample  rate.  
There is a  difference in  tonal character between 44.1kHz and 48kHz playback, however 
there is no difference between  multiples of a base sample rate such  as 48kHz to 96kHz. 
If  you  work  at  a  lower  sample  rate  and  render  at  a  higher  sample  rate,  it’s 
recommended that you either  render  out at the original  rate, or  work  at a multiple of the 
target rate at which you plan to render.

v1.0.2 operation manual

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Содержание Buffre

Страница 1: ...Operation Manual v1 0 2 operation manual 1...

Страница 2: ...op duration is selected by pressing different keys on the MIDI keyboard and adjusting the pitch wheel increases the repetition speed for accelerating drill effects The loop engine features several pla...

Страница 3: ...ain Output Level Control 10 Length Sweep Wheel Loop Duration Control 11 BitCrush Wheel Digital Distortion Effect 12 Pitch Knob Adjust the Loop Pitch Sample Rate 13 Snap Button Enables Half Step Divisi...

Страница 4: ...ol Gate Inputs 7 Reset Position Gate In Resets the Loop Start 8 Advance Quarter Note Gate In triggers the Advance function 9 Backwards Quarter Note Gate In triggers the Backwards function Modulation O...

Страница 5: ...nd you will need to manually create a corresponding sequencer lane using the Create Sequencer Track Edit menu item MIDI Keyboard Trigger Pressing a key in the range of D1 to F3 engages the beat repeat...

Страница 6: ...Manual Length controls are limited to 1 2 1 4 1 8 1 16 and 1 32 loop lengths The main purpose of the Manual Trigger and Length Controls is to provide quick access for those without a MIDI Keyboard and...

Страница 7: ...B2 256th Note 1 256 A 2 128th Triplet 1 128T 256th Note 1 256 A2 dotted 256th 3 256 G 2 128th Note 1 128 G2 64th Triplet 1 64T 128th Note 1 128 F 2 dotted 128th 3 128 F2 64th Note 1 64 E2 32nd Triple...

Страница 8: ...op until playback cycles back to the beginning of the loop Bit Crush Bit Crush is a type of digital distortion which can be applied to audio in the Buffre loop engine Increasing the control intensifie...

Страница 9: ...m loop The following illustrations refer to this as the baseline of an unprocessed signal Mode 1 Past When Buffre is triggered in Past Playback Mode a section of pre sampled audio is looped and the in...

Страница 10: ...beat repeat effect that engages at the time a trigger event is received When triggered incoming audio is stored to memory up to the end of the time division then loops continuously until the trigger i...

Страница 11: ...e access to pre sampled audio and when a trigger is received the effect will immediately start reversing the audio playback and sound as if the loop is rewinding The loop will continue to loop backwar...

Страница 12: ...data will be played in reverse as the memory fills with incoming audio information Reverse FW BW When Reverse is enabled and playback is set to either current or past palindrome modes the initial dir...

Страница 13: ...is released When the trigger is released the incoming audio passes through normally Switching the button on again while holding the trigger resumes normal loop playback Current Loop On Disabled When i...

Страница 14: ...one or more loop cycles audio will immediately stop if the button is switched off If you continue to hold the trigger and switch the button on again playback continues at the point where it stopped T...

Страница 15: ...ffre to Past Playback with Reverse and then click on the Manual Trigger button to engage a one shot reverse sweep Current One Shot It s important to note that you will hear no effect when One Shot Mod...

Страница 16: ...rs The Gate On button and the Gate Start and Gate Length Knobs Gate On The Gate On button enables or disables the effect Gate Start The Gate Start parameter sets the position where audio is rendered f...

Страница 17: ...As you move the knob away and back towards 0 the knob position will snap at the vertical point and the lamp will go off The scaling is non linear and non symmetrical by design If you prefer a linear s...

Страница 18: ...ared transition Release is also useful when you start working with capturing granular elements in the 1 128th note divisions and smaller This process can modify the harmonics of extremely short loopin...

Страница 19: ...ack loop segment forward by a quarter note You can press the Advance Quarter button several times until you reach the end of the audio stored in memory and the waveform segments will shift to correspo...

Страница 20: ...olume The Volume knob controls the output level directed to the main audio outputs Both audio processed in the loop engine and the input signal gain are adjusted by this control FX Send Controls Buffr...

Страница 21: ...menu Select Bu re Beat Repeater This will add the device to the rack and automaJcally cable it as an insert e ect between the Dr OctoREX and the MIX Channel device 4 Press Play on the Sequencer Transp...

Страница 22: ...you do not have an audio le you may also import a REX loop to the audio track 2 On the Audio Track device press the SHOW INSERT FX buYon to expand the insert e ect secJon 3 From the Create Menu CreaJ...

Страница 23: ...Bank Kong Patches directory 3 Hold down the Shic Key to bypass autorouJng and add a Bu re Beat Repeater from the Create Menu CreaJve E ects sub menu 4 Hit TAB to view the rear of the rack 5 Connect Bu...

Страница 24: ...Then hit TAB to ip back to the front of the rack 6 Create a ReDrum Drum Computer and from the contextual menu Select Reset Device to clear all preloaded seWngs 7 On Drum Channel 1 set drum on events o...

Страница 25: ...onnected to the Reason Sampling Inputs When the loop engine is engaged audio from the FX Send outputs is directed to the sampling inputs allowing you to capture looped distorted or reversed audio snip...

Страница 26: ...ect it You will see a bounding box appear around the device then from the Create Menu UJliJes submenu select Matrix PaYern Sequencer 5 Press the TAB key to ip the rack and con rm the autorouJng connec...

Страница 27: ...to view the rear of the rack 13 Connect the Matrix Curve CV output to the Bu re Length CV Pitch Wheel Input Leave the CV trim seWng to the default of 127 14 Set the Matrix Curve CV to Bipolar mode the...

Страница 28: ...Reason Factory Sound Bank Dr Rex Percussion Loops Keith LeBlanc KLB Rubber Perc directory and load the loop Prc04_Rubber_156_KLB rx2 3 Create a Bu re Beat Repeater and verify that it s inserted betwe...

Страница 29: ...Program gate events on step 1 step 5 step 9 and step 13 All other gate steps should be o see image on previous page 9 Press Play on the Sequencer Transport to hear the glitching rhythmic loop that cha...

Страница 30: ...l help govern the signal level to prevent clipping 1 In your Reason Song Session Bypass AutorouJng and Create a Bu re Beat Repeater ReposiJon Bu re so that it sits directly under the Master SecJon Dev...

Страница 31: ...u re and on the contextual menu select the item Combine Bu re will now be nested inside a combinator sub rack 6 Inside the Combinator sub rack create a Thor Polysonic Synthesizer Only the step sequenc...

Страница 32: ...can modify the combinator to make this adjustable from a combinator Rotary control if you need variable resoluJon The keyboard response of the step sequencer is monophonic and legato performance will...

Страница 33: ...tifacts are pure tones or bass heavy material The worst case would be low frequency sine waves If you find a situation where Buffre cannot process the loop without a very hard zero crossing glitch add...

Страница 34: ...8 Triplets On 19 Pitch 20 Pitch Steps 21 Pitch Snap 51 Randomize 52 Random Link 23 Release 24 Gate On 25 Gate Start 26 Gate Length 27 Reset Position 28 Position Advance 29 Position Backward 39 FX Send...

Страница 35: ...ets Pitch Pitch Pitch Steps PitchSteps Pitch Snap Pitch Snap Randomize Random Random Link Link Random Release Release Gate On Gate Enable Gate Start Gate Start Gate Length Gate Length Reset Position R...

Страница 36: ...e maps Koshdukai offers some great advice http koshdukaimusicreason blogspot pt 2012 06 rack extensions remote side of it html Scope Peff com peff Buffre Control Surface Item Key Remotable Item Scale...

Страница 37: ...FF All Rights Reserved http peff com TECHNOLOGY Propellerhead REASON and Rack Extensions Propellerhead Software AB Stockholm Sweden PEFF Rack Extension Design and Development Hayden Bursk Kurt Kurasak...

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