object PartConv extends ProductReader[PartConv] with Serializable
A UGen for partitioned convolution. Its advantage over non-partitioning UGens
such as Convolution2 is that the impulse response can be arbitrarily large
amortization is used to spread processing and avoid CPU spikes.
The impulse response buffer must be specially prepared, using a /b_gen
command that transforms an existing regularly formatted buffer to a new
partitioned convolution ready buffer.
Examples
// Dan Stowell's reverb // synthesize impulse response val ir = (1f +: Vector.fill(100)(0f)) ++ (1f to 0f by -0.00002f).map { f => if (math.random < 0.5) 0f else f.pow(8) * (math.random - 0.5).signum * 0.1f } // ir.plot() // send the IR to a regular buffer val irBuf = Buffer(s) irBuf.alloc(ir.size) irBuf.setData(ir) // calculate the partitioning parameters val fftSize = 2048 val numPart = (ir.size * 2.0 / fftSize).ceil.toInt // 49 val partSize = fftSize * numPart // 100352 // create the specially formatted partitioned buffer val partBuf = Buffer(s) partBuf.alloc(partSize) // currently no predefined method for this command! s ! osc.Message("/b_gen", partBuf.id, "PreparePartConv", irBuf.id, fftSize) // now we can forget about the input buffer irBuf.free() val x = play { // trigger IR every 4 seconds val in = Impulse.ar(0.25) * 0.5 PartConv.ar(in, fftSize, partBuf.id) } // do not forget to free the buffer eventually x.free(); partBuf.free()
- See also
- Alphabetic
- By Inheritance
- PartConv
- Serializable
- ProductReader
- AnyRef
- Any
- Hide All
- Show All
- Public
- Protected
Value Members
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##: Int
- Definition Classes
- AnyRef → Any
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- def ar(in: GE, fftSize: GE, buf: GE): PartConv
- in
the realtime input to be convolved
- fftSize
FFT size which is twice the input signal partition size. This must be a multiple of the control-block size, and there must be at least two blocks per partition (to allow for amortization) (init-time only)
- buf
buffer identifier for the fixed kernel (init-time only). (init-time only)
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- def read(in: RefMapIn, key: String, arity: Int): PartConv
- Definition Classes
- PartConv → ProductReader
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def toString(): String
- Definition Classes
- AnyRef → Any
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
Deprecated Value Members
- def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable]) @Deprecated
- Deprecated