1. A method for generating a speech signal comprising the steps of:
receiving super-class information;
receiving fundamental frequency information;
applying each tuple of super-class information and fundamental frequency information to a module that correlates fundamental frequencies with LSF vectors for different super-class to obtain a desired LSF vector associated with each of said tuples; and
generating a speech spectrum, in association with each tuple, that is characterized by an LSF vector that is, or approximates, said desired LSF vector associated with each of said tuples.
2. The method of claim 1 wherein said step of generating a speech spectrum comprises the steps of generating a train of pulses with a repetition rate that corresponds to said fundamental frequency information, and filtering said train with a filter having the transfer function
1
1
–
\u2211
i
=
1
p
\u2062
\u2003
\u2062
b
i
\u2062
z
–
i
,
where the bi’s are coefficients that are derived from said desired LSF vector.
3. The method of claim 1 where sequences of tuples of super-class information and fundamental frequency are divisible into groups, where each group shares a common super-class designation.
4. The method of claim 3 where super-class designations are phoneme type designations.
5. The method of claim 1 where said module is a database.
6. The method of claim 1 further comprising a step of receiving a group of speech samples in association with each received unit of fundamental frequency information, and information representative of LPC coefficients of said group of speech samples.
7. The method of claim 6 where said step of generating a speech spectrum comprises filtering each group of speech samples to form a speech spectrum with said LPC coefficients received in said step of receiving being replaced with LPC coefficients that are related to said desired LSF vector.
8. The method of claim 6 where said step of generating a speech spectrum comprises passing each group of speech samples through a filter having the transfer function
1
–
\u2211
i
=
1
p
\u2062
\u2003
\u2062
a
i
\u2062
z
–
i
1
–
\u2211
i
=
1
p
\u2062
\u2003
\u2062
b
i
\u2062
z
–
i
where the \u03b1i’s are said LPC
coefficients received in said step of receiving and the bi’s are LPC coefficients derived from said desired LSF vector associated with each of said tuples.
9. A method for generating a speech signal comprising the steps of:
receiving a group of speech samples for a speech frame;
receiving fundamental frequency information for said speech frame;
associating super-class information with said speech frame;
applying said super-class information and said fundamental frequency information to a module that correlates fundamental frequencies with LSF vectors for different super-classes, to obtain from said module a desired LSF vector of coefficients associated with each of said tuples; and
modifying said group of speech samples to create a group of modified speech samples, such that said group of modified speech samples has a spectrum envelope whose LSF vector approximates said desired LSF vector.
10. The method of claim 9 further comprising a step of receiving a vector of coefficients that characterize said received group of speech samples.
11. The method of claim 10 where said coefficients in said received vector of coefficients are linear predictive coding coefficients.
12. The method of claim 11 where said modifying comprises applying said group of speech samples to a filter having the transfer function
1
–
\u2211
i
=
1
p
\u2062
\u2003
\u2062
a
i
\u2062
z
–
i
1
–
\u2211
i
=
1
p
\u2062
\u2003
\u2062
b
i
\u2062
z
–
i
where the \u03b1i’s are said linear predictive coding coefficients and the bi’s are linear predictive coding coefficients derived from said desired LSF vector.
13. A method for generating a speech signal comprising the steps of:
receiving fundamental frequency information for a speech frame;
associating super-class information with said speech frame;
applying said super-class information and said fundamental frequency information to a module that correlates fundamental frequencies with LSF vectors for different super-classes, to obtain from said module a desired LSF vector of coefficients associated with each of said tuples; and
modifying said group of speech samples to create a group of modified speech samples, such that said group of modified speech samples has a spectrum envelope whose LSF vector approximates said desired LSF vector.
14. The method of claim 13 where said step of associating includes, at least for some speech frames, a step of receiving super-class information.
15. The method of claim 13 where said desired LSF is obtained in said module from a memory that maintains information about each super-class.
16. The method of claim 13 where said desired LSF is obtained in said module through computations based on parameter information stored in a memory, where said parameter information is sensitive to said super-class and to said fundamental frequency.
17. The method of claim 16 where said parameter information comprises parameters \u03b1i, \u03bci and \u03a3i, where i is an index designating one of Q different classes, \u03b1i is the prior probability of class i, such that
\u2211
i
=
1
Q
\u2062
\u2003
\u2062
\u03b1
i
=
1
,
\u03bci is a mean vector for variable z=F0, LSFsT, and \u03a3i is a covariance matrix, and where said desired LSF vector is computed from, where
\u2211
i
=
1
Q
\u2062
\u2003
\u2062
h
i
\u2061
(
x
)
\xb7
\u03bc
i
y
+
(
\u2211
i
yx
\u2062
\u2003
)
\u2062
(
\u2211
i
xx
\u2062
\u2003
)
–
1
\u2062
(
x
–
\u03bc
i
x
)
where
h
i
=
\u03b1
i
\u2062
N
(
x
,
\u2003
\u2062
\u03bc
i
x
,
\u2003
\u2062
\u2211
i
xx
\u2062
\u2003
)
\u2211
j
=
1
Q
\u2062
\u2003
\u2062
\u03b1
j
\u2062
N
(
x
,
\u2003
\u2062
\u03bc
j
x
,
\u2003
\u2062
\u2211
j
xx
\u2062
\u2003
)
,
\u2211
i
\u2003
\u2062
\u2003
\u2062
=
\u2211
i
xx
\u2062
\u2003
\u2211
i
xy
\u2062
\u2003
\u2211
i
yx
\u2062
\u2003
\u2211
i
yy
\u2062
\u2003
,
and
\u03bc
i
=
\u03bc
i
x
\u03bc
i
y
\u2062
\u2003
.
18. A method for communicating information from a transmitter to a receiver comprising the steps of, in the transmitter:
receiving a speech signal;
subdividing said speech signal into a plurality of speech frames;
analyzing each frame of said speech frames identify at least fundamental frequency of speech in said frame, and energy in said frame; and
transmitting said information that specifies said fundamental frequency and said energy,
at least for some of said speech frames, those being selected speech frames, transmitting information about super-class identities of the phoneme-related segments from which said selected speech frames are subdivided
receiving said fundamental frequency information transmitted by said step of transmitting for each speech frame;
receiving said super-class identities;
associating received super-class information with received fundamental frequency information;
applying said fundamental frequency information and associated super-class information and to a module that correlates fundamental frequencies with LSF vector for different super-classes, to obtain from said module a desired LSF vector of coefficients associated with each of said tuples; and
creating a speech frame with a spectrum envelope that is related to said desired LSF vector speech samples, such that said group of modified speech samples has a spectrum envelope whose LSF vector approximates said desired LSF vector.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A heat exchanger for dissipating heat from a heat generating component, said heat exchanger comprising:
a thermally conductive base in thermal communication with said component;
a plurality of thermally conductive plate fins affixed to said base and being separated by channels;
said fins defining an open plate fin field having a top, a bottom, an inlet region, an outlet region, an interior plate fin and a side plate fin;
wherein said interior plate fin further comprising a plurality of textured portions extending outwardly from a surface of said fin for disturbing fluid passing along said fin and disrupting formation of a boundary layer.
2. The heat exchanger of claim 1, wherein said side plate fin comprising a plurality of textured portions extending outwardly from a surface of said fin for disrupting formation of a boundary layer along said fin and reducing formation of high pressure within said fin field.
3. The heat exchanger of claim 2, wherein said side plate fin comprising an aperture in the form of a slot substantially contiguous with said base for providing fluid communication across said channel.
4. The heat exchanger of claim 1, wherein said interior fin comprising an aperture located substantially contiguous with said base for enhancing fluid communication across said heat exchanger.
5. The heat exchanger of claim 2, wherein said interior plate fin comprising an aperture located substantially contiguous with said base for enhancing fluid communication across said heat exchanger.
6. The heat exchanger of claim 1, wherein said textured regions being a louvered flow guide further comprising a peninsula portion connected to said fin and extending vertically outward from said fin at an angle.
7. The heat exchanger of claim 1, wherein said textured portions being elliptical in shape.
8. The heat exchanger of claim 1, further comprising a flow guide traversing a top portion of said plate fins for imparting a downward force on the fluid within the fin field and preventing exiting of fluid from the top region of said fins.
9. The heat exchanger of claim 8, wherein said plate fins comprising an extension protruding from the top region of each discrete plate fin, wherein alignment of the extensions forming said flow guide.
10. The heat exchanger of claim 8, wherein said flow guide is selected from the group consisting of a horizontal bar, a flat bar, a profiled bar, and a profiled bar having at least one point.
11. The heat exchanger of claim 8, wherein said flow guide covers a sufficient portion of said top region to restrict ingress of fluid and creating a near impingement condition.
12. The heat exchanger of claim 1, wherein said plate fins and said interior plate fin comprising an aperture substantially contiguous with said base for enhancing cross communication of fluid about said heat exchanger.
13. The heat exchanger of claim 12, wherein said heat exchanger being rotatably mountable at a plurality of angles relative to said component.
14. The heat exchanger of claim 1, wherein said textured portions decreasing pressure drop of fluid in said fin field.
15. A method of dissipating heat from a heat generating component, comprising the following steps:
affixing a heat sink apparatus adjacent to the heat generating component, wherein said heat sink comprising a plurality of thermally conductive plate fins affixed to a thermally conductive base, and said plate fins defining an open plate fin field having a top, a bottom, an inlet region, an outlet region, an interior plate fin, a side plate fin, and a channel between said interior fin and said side fin,
providing a plurality of textured portions extending outwardly from a surface of said interior fin for disturbing fluid passing along said fin and disrupting formation of a boundary layer.
16. The method of dissipating heat from a heat generating component of claim 15, further comprising providing said side plate fin comprising a plurality of textured portions extending outwardly from a surface of said fin for disturbing fluid passing along said fin and disrupting formation of a boundary layer.
17. The method of dissipating heat from a heat generating component of claim 15, wherein said textured portions providing formation of eddy currents in fluid passing through the heat sink and increasing pressure of said fluid.
18. The method of dissipating heat from a heat generating component of claim 15, further comprising providing said side plate fin comprising an aperture substantially contiguous with said base for enhancing communication of fluid between an interior portion of said heat sink apparatus and an area exterior to said heat sink apparatus.
19. The method of dissipating heat from a heat generating component of claim 15, further comprising providing said interior plate fin comprising a plurality of apertures for enhancing communication of fluid across said channel.
20. The method of dissipating heat from a heat generating component of claim 19, further comprising providing said side plate fin providing a plurality of apertures for enhancing communication of fluid across said channel.
21. The method of dissipating heat from a heat generating component of claim 24, further comprising formation of a louvered flow guide adjacent to said aperture and protruding outward from a surface of said plate fin at an angle, comprising the following steps:
cutting a slot in said plate fin for partially circumscribing a peninsula portion;
maintaining said peninsula portions connected to said plate fin through a tab portion; and
bending said peninsula portion along said tab portion.
22. The method of dissipating heat from a heat generating component of claim 20, further comprising rotatably mounting said heat sink at a plurality of angles relative to said component.
23. The method of dissipating heat from a heat generating component of claim 15, further comprising controlling premature exiting of fluid from a top portion of said fin field through formation of a flow guide traversing a top portion of said plate fins.
24. The method of dissipating heat from a heat generating component of claim 23, wherein said flow guide being selected from the group consisting of a horizontal bar, a flat bar, a profiled bar and a profiled bar having at least one point.
25. A heat exchanger for dissipating heat from a heat generating component, said heat exchanger comprising:
a thermally conductive base in thermal communication with said component;
a plurality of thermally conductive plate fins affixed to said base and being separated by channels;
said fins defining a fin field having a top, a bottom, an inlet region, an outlet region, an interior plate fin and a side plate fin;
wherein said interior plate fin further comprising a plurality of textured portions extending outward from a surface of said fin for decreasing pressure drop of fluid within the fin field thereby creating an aerodynamic characteristic to the heat dissipating device.
26. The heat exchanger of claim 25, wherein said interior and side plate fins comprising an aperture substantially contiguous with said base for enhancing cross communication of fluid about said heat exchanger.
27. The heat exchanger of claim 25, wherein said side plate fin further comprising a plurality of textured portions extending outward from a surface of said fin for decreasing pressure drop of fluid within the fin field.
28. The heat exchanger of claim 27, wherein said textured regions of said interior and side plate fins disrupting formation of a boundary layer along the plate fins and minimizing stagnation of fluid flow within the fin field.
29. The heat exchanger of claim 25, wherein said heat exchanger being rotatably mountable to said heat generating component at a plurality of angles.
30. The heat exchanger of claim 25, further comprising a flow guide traversing a top portion of said plate fins for imparting a downward force on the fluid within the fin field and preventing premature exiting of fluid from the top region of said fins.