How to get word timestamps with pocketsphinx?

[Benjamin Gorman]

I'm trying a very basic example from the tutorial, and I wanted to be able to get the word times from the recognition. In the pocketsphinx_continuous it states I can say "-time yes" as a command line parameter. However, the default ps_args() doesn't have a definition. I tried adding the definition into my own arg array but that didn't work either.

Is this possible? Here is where I would like to specify the -time argument. I'm aware I need to generate my own arg array like so:

const arg_t options[] = {
        POCKETSPHINX_OPTIONS,
        CMDLN_EMPTY_OPTION,
        "time -yes"
    };
~~~~~~



~~~~~~
config = cmd_ln_init(NULL, options, TRUE, "-hmm", MODELDIR "/en-us/en-us", "-lm", MODELDIR "/en-us/en-us.lm.dmp", "-dict", MODELDIR "/en-us/cmudict-en-us.dict", NULL);

[Nickolay V. Shmyrev]

Benjamin

The option "-time" is used in command line tool pocketsphinx_continuous. If you want to print times in your own code you can use the following code chunk from pocketsphinx_continuous:

static void
print_word_times()
{
    int frame_rate = cmd_ln_int32_r(config, "-frate");
    ps_seg_t *iter = ps_seg_iter(ps, NULL);
    while (iter != NULL) {
        int32 sf, ef, pprob;
        float conf;

        ps_seg_frames(iter, &sf, &ef);
        pprob = ps_seg_prob(iter, NULL, NULL, NULL);
        conf = logmath_exp(ps_get_logmath(ps), pprob);
        printf("%s %.3f %.3f %f\n", ps_seg_word(iter), ((float)sf / frame_rate),
               ((float) ef / frame_rate), conf);
        iter = ps_seg_next(iter);
    }
}

[Benjamin Gorman]

That worked perfectly. Many thanks!