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Multi-Pitch Estimation of Inharmonic Signals

Nilsson, Tommy (2013) FMS820 20131
Mathematical Statistics
Abstract (Swedish)
A signal with harmonic structure is often characterized by its fundamental frequency,
or pitch. This single parameter contain vital information of a range of
applications such as musical transcription, tuning of stringed instruments, speech
processing and more. Some signal sources, for instance a sti vibrating string, exhibit
waveforms with slightly deviating harmonic structure. This phenomenon is
known as inharmonicity and it complicates the matter of estimating the fundamental
frequency. If several signals with this inharmonic structure are added together,
for instance for a musical chord from a stringed instrument, we arrive at the problem
formulation of this work. How does one estimate the fundamental frequency of
a... (More)
A signal with harmonic structure is often characterized by its fundamental frequency,
or pitch. This single parameter contain vital information of a range of
applications such as musical transcription, tuning of stringed instruments, speech
processing and more. Some signal sources, for instance a sti vibrating string, exhibit
waveforms with slightly deviating harmonic structure. This phenomenon is
known as inharmonicity and it complicates the matter of estimating the fundamental
frequency. If several signals with this inharmonic structure are added together,
for instance for a musical chord from a stringed instrument, we arrive at the problem
formulation of this work. How does one estimate the fundamental frequency of
a multi-pitch signal containing inharmonicities?
In this work we present a multi-pitch estimator able to handle inharmonic signals.
This algorithm uses a source separating technique in order to apply a single
pitch estimator to the resulting sub-problems. The performance of the estimator is
evaluated and compared to other multi-pitch estimators with good results. (Less)
Please use this url to cite or link to this publication:
author
Nilsson, Tommy
supervisor
organization
course
FMS820 20131
year
type
H2 - Master's Degree (Two Years)
subject
language
English
id
3629131
date added to LUP
2013-04-02 14:56:15
date last changed
2013-04-02 14:56:15
@misc{3629131,
  abstract     = {A signal with harmonic structure is often characterized by its fundamental frequency,
or pitch. This single parameter contain vital information of a range of
applications such as musical transcription, tuning of stringed instruments, speech
processing and more. Some signal sources, for instance a sti vibrating string, exhibit
waveforms with slightly deviating harmonic structure. This phenomenon is
known as inharmonicity and it complicates the matter of estimating the fundamental
frequency. If several signals with this inharmonic structure are added together,
for instance for a musical chord from a stringed instrument, we arrive at the problem
formulation of this work. How does one estimate the fundamental frequency of
a multi-pitch signal containing inharmonicities?
In this work we present a multi-pitch estimator able to handle inharmonic signals.
This algorithm uses a source separating technique in order to apply a single
pitch estimator to the resulting sub-problems. The performance of the estimator is
evaluated and compared to other multi-pitch estimators with good results.},
  author       = {Nilsson, Tommy},
  language     = {eng},
  note         = {Student Paper},
  title        = {Multi-Pitch Estimation of Inharmonic Signals},
  year         = {2013},
}