Mychaela Falconia
2018-06-03 01:06:38 UTC
Hello fellow LUGers,
I am looking to hire someone for a small-ish but PAID consulting gig
involving audio, loudspeakers and acoustics. The objective is to
produce a new speaker that sounds as good as a certain historical one
that is no longer made. By "producing" a speaker I mean selecting a
suitable speaker part among currently made ones, designing and building
a back volume enclosure for it, or whatever it takes.
What makes this speaker selection/building job unusual is the
application: I need this speaker not for a computer or a music system
or any other conventional application, but for my cellphone development
and demonstration platform. I already having a fully working cellular
board that can make and receive phone calls, as well as play various
beeps and ringtones through its DSP, and I need a cellphone-appropriate
loudspeaker for it. Cellphones have two kinds of speakers in them:
earpiece speakers which are meant to be pressed against the user's ear
in order to be heard, and loudspeakers (for hands-free calls and
ringing) which need to be audible from some distance away. The speaker
I need is of the cellphone hands-free/ringing loudspeaker type. They
are 8 ohm speakers, and the power going into them is about 800 mW at
the maximum volume.
I already have one working speaker which I have used to verify that the
loudspeaker driving circuits on my board are good: it is the speaker
built into a certain historical test handset from TI from 2002. But
this speaker is a unique historical artifact, i.e., there is only one
of it in the world. I need a new replacement speaker that can be made
in quantities greater than 1.
The problem I am having is that the historical speaker from TI sounds
great, but when I connect my own speaker to the very same driving
circuit, the acoustic output is far too quiet.
What I need is someone who could meet with me in person somewhere and
listen with their own ears to the difference in the sound produced by
the historical speaker from TI vs. the new speaker I have picked from
Digi-Key. Then do whatever it takes to produce a new speaker that
sounds as good as the old one - I don't know if the problem is in the
speaker part selection (poor selection thereof) or in the lack of a
back volume enclosure for it, or what. I need someone who has a good
clue about speakers and their acoustics. It is highly unlikely that
there exists any person who is very knowledgeable specifically about
cellphone loudspeakers, but I need someone who won't be afraid to poke
around in this space.
I am willing to pay very generously for this job *if* you can deliver
what I seek, i.e., a new speaker that sounds as good as the old one.
TIA for any help,
Mychaela
I am looking to hire someone for a small-ish but PAID consulting gig
involving audio, loudspeakers and acoustics. The objective is to
produce a new speaker that sounds as good as a certain historical one
that is no longer made. By "producing" a speaker I mean selecting a
suitable speaker part among currently made ones, designing and building
a back volume enclosure for it, or whatever it takes.
What makes this speaker selection/building job unusual is the
application: I need this speaker not for a computer or a music system
or any other conventional application, but for my cellphone development
and demonstration platform. I already having a fully working cellular
board that can make and receive phone calls, as well as play various
beeps and ringtones through its DSP, and I need a cellphone-appropriate
loudspeaker for it. Cellphones have two kinds of speakers in them:
earpiece speakers which are meant to be pressed against the user's ear
in order to be heard, and loudspeakers (for hands-free calls and
ringing) which need to be audible from some distance away. The speaker
I need is of the cellphone hands-free/ringing loudspeaker type. They
are 8 ohm speakers, and the power going into them is about 800 mW at
the maximum volume.
I already have one working speaker which I have used to verify that the
loudspeaker driving circuits on my board are good: it is the speaker
built into a certain historical test handset from TI from 2002. But
this speaker is a unique historical artifact, i.e., there is only one
of it in the world. I need a new replacement speaker that can be made
in quantities greater than 1.
The problem I am having is that the historical speaker from TI sounds
great, but when I connect my own speaker to the very same driving
circuit, the acoustic output is far too quiet.
What I need is someone who could meet with me in person somewhere and
listen with their own ears to the difference in the sound produced by
the historical speaker from TI vs. the new speaker I have picked from
Digi-Key. Then do whatever it takes to produce a new speaker that
sounds as good as the old one - I don't know if the problem is in the
speaker part selection (poor selection thereof) or in the lack of a
back volume enclosure for it, or what. I need someone who has a good
clue about speakers and their acoustics. It is highly unlikely that
there exists any person who is very knowledgeable specifically about
cellphone loudspeakers, but I need someone who won't be afraid to poke
around in this space.
I am willing to pay very generously for this job *if* you can deliver
what I seek, i.e., a new speaker that sounds as good as the old one.
TIA for any help,
Mychaela
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