Re: [Kaldi-users] !SIL in output

[Mailing l. u. f. U. C. a. U. <kal...@li...>]

Another approach is to remove the optional silences phones from the lexicon
transducer
and to either add silence loops to each state of the language model or
compose the language model with the stochastic silence transducer as
described
in "A generalized construction of integrated speech recognition
transducers". For both of
these case silence will need to appears as word in your lexicon.

Paul


On 12 February 2013 01:53, Mailing list used for User Communication and
Updates <kal...@li...> wrote:

>
> [forwarding the answer to a question in case it's useful for others; this
> is just an archiving exercise.]
>
> On Mon, Feb 11, 2013 at 11:52 AM, Daniel Povey <dp...@gm...> wrote:
>
>> It is normal not to have a symbol for silence.
>> The way the FST composition works is, the LM has no silence symbols in
>> it, and we compose with a lexicon that adds optional silence phones (but
>> does not put silence symbols in).
>> Probably the easiest way to get the silence info, if you are using the s5
>> recipe, is to use the "lattice-align-words" program.   This program is
>> basically for lining the input and output symbols up so that the input
>> symbols (pdfs) for a word are on the same arc as that word; it puts the
>> optional silences on separate arcs. You can specify what symbol you want it
>> to use for silence; by default it is epsilon (0).  You would have to make
>> sure there is a symbol in your words.txt for silence.
>>
>> Dan
>>
>>
>>
>> On Mon, Feb 11, 2013 at 11:13 AM <someone> wrote:
>>
>>>  Hi Dan & Arnab,****
>>>
>>> ** **
>>>
>>> I do not see !SIL in the output of WSJ0 decoding.****
>>>
>>> ** **
>>>
>>> Is it OK?****
>>>
>>> ** **
>>>
>>> What should I change in order to get !SIL information in the decoding?**
>>> **
>>>
>>> ** **
>>>
>>> Thanks,****
>>>
>>> [name removed]
>>>
>>
>
>
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