Defines functions bark2hz

Documented in bark2hz

# This code is based on the Matlab implementations of PLP and Rasta
# feature calculations by Daniel P. W. Ellis of Columbia University /
# International Computer Science Institute.  For more details, see:
# http://www.ee.columbia.edu/~dpwe/resources/matlab/rastamat/

bark2hz <- function(z){
    if(!is.numeric(z) || z < 0)
      stop("frequencies have to be non-negative")

    # Hynek's formula (taken from rasta/audspec.c)
    600 * sinh(z/6)

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tuneR documentation built on July 10, 2018, 1:02 a.m.