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Adjusting the Reverberation Level

 

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 SREV1 Sampling Guide

 

Adjusting the Reverberation Level

 

If you use your samples as they are, you may find that the reverberation produced is too 
loud relative to the input signal. This can be resolved by editing the header information 
with IREdit.

In IREdit, choose Header from the Tools menu. The Edit Header window appears, dis-
playing various information about the data, as shown below.

One of the values you can adjust is “BitShift,” which you can use to reduce or increase 
the level of the sample data. If the reverberation is too loud, try various negative bit shift 
values and chose the one that provides the best results.

Содержание S Rev1

Страница 1: ...SREV1 Sampling Guide An Introduction to Impulse response Sampling with the SREV1 Sampling Reverberator...

Страница 2: ...Placement 6 2 Sampling Tutorial 7 Configuring IRSampler 7 Checking the Generator Output 9 Setting Input Levels Automatically 9 Actual Sampling 9 Using Your Data on the SREV1 10 3 Data Editing 11 Fixi...

Страница 3: ...to add it to a vocal or instrument sound was to actually perform in that space and record the resulting sound With the introduction of the SREV1 however it s now possible to sample the reverberation...

Страница 4: ...then picked up by a number of microphones and returned back to the SREV1 for processing The acquired data can be saved onto PC Card edited as neces sary using IREdit and then loaded into the SREV1 to...

Страница 5: ...ly similar to the sound of an impulse this is akin to hearing an impulse response What you heard were the reverberation character istics of that acoustic space your hands being the audio source your e...

Страница 6: ...listening Be careful with your volume level settings when using TSPs This higher level allows us to capture data with a better S N ratio than that possible using an impulse signal Of course simply ou...

Страница 7: ...iorecordingshouldbeadequate ThePAsystemshouldhave a wide flat range and enough power to energize the reverberation you want to capture The better the equipment the more faithful the end results will b...

Страница 8: ...which the SREV1 is connected The selected COM port is used automatically the next time IRSampler is started but can be changed at any time by choosing COM Port from the Setup menu Choose COM1 or COM2...

Страница 9: ...ger window Assign the Sampler Inputs as follows Channel 1 Slot 1 1 Channel 2 Slot 1 2 Channel 3 Slot 1 3 Channel 4 Slot 1 4 Input Levels Main window Set the Sampler Input level faders as follows Chann...

Страница 10: ...t appears in the Status box In addition to setting the input level faders the Level Adjust function automatically cal culates and sets the CNV Convolution Bit Shift parameter which is used to normaliz...

Страница 11: ...OAD button and press ENTER to access the Data Load page Next select the PCMCIA button and press the ENTER button Your impulse response data should appear in the list of files Use the DATA wheel or the...

Страница 12: ...nd of the reverberation An unwanted delay at the beginning of the reverberation Direct sound in the sample is making it unusable The reverberation is too loud These issues are addressed in the followi...

Страница 13: ...at the end of the sample so that the reverberation decays naturally You can do this by using the Fade Out func tion of IREdit The following image shows a region of extraneous noise selected prior to f...

Страница 14: ...onsedatamaycontainaspatialdelayatthebeginningduetothetime it takes the pulse to reach the microphone from the speaker In some cases this may be a hindrance and can be deleted by using the IREdit Cut f...

Страница 15: ...crophones directly from the speakers In order to use the Reverb Balance parameter or to create a mix of dry and wet signals on your mixer it s best to remove the direct sound component which you can d...

Страница 16: ...resolved by editing the header information with IREdit In IREdit choose Header from the Tools menu The Edit Header window appears dis playing various information about the data as shown below One of t...

Страница 17: ...ch the SREV1 begins exponentially attenuating the reverb data Essentially reverberation consists of two components the early reflections and the main reverb which follows Early reflections define the...

Страница 18: ...k up the rever berating sound which is fed back to the analog SREV1 inputs via the mic preamp Hall PC running IRSampler Power Amp Mic Preamp FL FR RL RR AC IN SLOT 1 SLOT 2 WORD CLOCK IN REMOTE 2 OUT...

Страница 19: ...ll PC running IRSampler Power Amp Mic Preamp D A A D FL FR RL RR SREV1 AES EBU AES EBU IRSampler configuration Channel mode 4ch Trigger source Internal Generator output AES EBU1 1 Input Ch 1 AES EBU1...

Страница 20: ...ng fluctuating waveforms such as acoustic reverberation since they provide the kind of simultaneousness across tracks necessary for accurate averaging Step 1 Recording Pulses on the Digital Recorder T...

Страница 21: ...SREV1 The final step is to sample the recorded responses into the SREV1 using the trigger sig nal previously recorded on track 2 to trigger sampling as shown below Hall D A A D Power Amp Mic Amp FL F...

Страница 22: ...YAMAHA CORPORATION Pro Audio Digital Musical Instrument Division P O Box 3 Hamamatsu 430 8651 Japan...

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