问题
I'm trying to load a sample from a 4GB+ mono WAV file (total file duration 24h, I'm loading a 15min slice).
library(tuneR)
so <-
readWave(
"file.wav", from = 1, to = 15, units = "minutes"
)
This is the traceback
Error in readBin(con, int, n = N, size = bytes, signed = (bytes != 1), :
invalid 'n' argument
2 readBin(con, int, n = N, size = bytes, signed = (bytes != 1), endian = "little")
1 readWave(filePath, from = 1, to = 15, units = "minutes")
This happens for every 'from' and 'to' params (5,10,15,etc).
What I initially though is that I'm overflowing the data type of n, which I assume is long, but it doesn't really make sense because the error appears even when I try to load a 1min sample.
Any ideas about what may be causing this?
Note: The original file was mp3 stereo. It was split into 2 channels with WavePad and one of the channels was saves as a WAV. Maybe the conversion is the problem?
回答1:
Wave files are limited to 4GB of audio data because all of the size fields in a wave header are 32-bits. See http://en.wikipedia.org/wiki/WAV#Limitations
It's possible that WavePad uses the W64 format mentioned in the Wikipedia article but that readWave does not.
来源：https://stackoverflow.com/questions/30581289/invalid-n-argument-error-in-readbin-when-trying-to-load-a-large-4gb-audio