Abstract
We investigate the use of greedy sparse approximation
for facilitating the time-domain analysis of room impulse responses (RIRs),
specifically locating the times and amplitudes of arrivals
to not long after the upper bound of the ``mixing time,''
i.e., the time after which there exists in theory the same number of
sound rays per unit volume throughout the room.
We compare the performance of two methods of greedy sparse approximation ---
matching pursuit (MP) and orthogonal MP (OMP) ---
for estimating arrival times and amplitudes.
By using RIRs generated from a stochastic model,
we quantify the performance of each estimator
using dynamic time warping to optimally
pair estimated and true arrivals.
We find OMP significantly outperforms MP
in estimating both the arrival times and amplitudes,
and having fewer erroneous and duplicated arrivals.
for facilitating the time-domain analysis of room impulse responses (RIRs),
specifically locating the times and amplitudes of arrivals
to not long after the upper bound of the ``mixing time,''
i.e., the time after which there exists in theory the same number of
sound rays per unit volume throughout the room.
We compare the performance of two methods of greedy sparse approximation ---
matching pursuit (MP) and orthogonal MP (OMP) ---
for estimating arrival times and amplitudes.
By using RIRs generated from a stochastic model,
we quantify the performance of each estimator
using dynamic time warping to optimally
pair estimated and true arrivals.
We find OMP significantly outperforms MP
in estimating both the arrival times and amplitudes,
and having fewer erroneous and duplicated arrivals.
| Original language | English |
|---|---|
| Journal | Proceedings of the European Signal Processing Conference |
| Pages (from-to) | 1934-1938 |
| Number of pages | 5 |
| ISSN | 2076-1465 |
| Publication status | Published - 2010 |
| Event | EUSIPCO 2010 - Aalborg, Denmark Duration: 23 Aug 2010 → … |
Conference
| Conference | EUSIPCO 2010 |
|---|---|
| Country/Territory | Denmark |
| City | Aalborg |
| Period | 23/08/2010 → … |