MAn It's 5am tuesday. Been up too loong. I was gonna write a blog about fire behavior and really bore some people. But alas I am too tired. *yawn* WEll I will write somthing tomorrow. So keep a check on my site. I may just write a somthing interesting.

Good night all.

God Bless yall all.

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My goodness at how people, christian people will fight about what type of music they sing in church. It is always the old people want hymns and the kids want a band singing CCM. It's rediculous Jesus Christ died on the cross for our sins and we fight and quarrel about somthing so trivial as worship music. I think it is a shame.

My little southern baptist church is not immune by no means. Madison Street Baptist 800+ members. Only 80 attend. We get about 10 - 20 people under age 40 (youth) any given sunday. The rest WWII vets and thier widows and wives. It is a battle for sure. The older crowd want to stick only with hymns and the pastor and music director and the rest of the church want CCM and praise.

I myself want to move completly to CCM and praise. I take that phrase about let everything with breath praise the Lord seriously. The Lord can be praised with any instrument. So I think everyone according to thier talent should use it to sing praise to God. Singers should sing, Bassist should rumble, Guitarsist should strum, drummers should beat loud and precise and ect. Everone else sing and thank God. In fact I don't think man can ever orchastrate any song and praise worthy of Gods attention. But we should try and try and try again. Totally strive for perfection.

So what is so wrong with my view? Let me ask you people that think one kind of praise is better than another. Is that what God told you? Or is that you saying that. If the latter, you may have not totally surrendered your ideas to Jesus.

In summary I attended Madison Street Baptist before the new worship leader. The new worship leader trying to slip CCM on us with his Martin accoustic. Back when we sang from the church hymnal each sunday, and sung it all outta tune. I don't care for it. I feel like God can't be worshiped loud and passionate enough. But I know the ideal of unity trumps all my feelings I will stay out of the fight. I got my opinion but if singing hymns would bring unity in my church lets get out our hymnal and turn to #39.

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Alright first of all let's define High Fidelity. For a system, a stereo system to be deemed HI-FI it must deliver this.

A bandwidth of
-+3Db 20HZ - 20KHZ @ RATED power on both channels.

AND

Total harmonic Distortion is < 1% @ Rated power.

Also the accompaning speakers have to have the bandwidth also.

Now I think I have eliminated about 95% of all modern stereo systems with HI-FI written on them. You find me a system that can deliver 100watts stereo and speakers with these ratings and I will give you a cookie. If you take a close examination of a amplfier box and literature you will see the HI-FI emblem. But if the specs will show some sorry performance. I recently bought a Sony 30 watt desk radio for my mother. It has HI-FI written all over it. If you look in the manual at the specs it shows a bandwidth of 40HZ to 10KHZ under half the HI-FI standard. Also stated that it had up to 10% harmonic distortion. TEN TIMES THE MAX ALLOWED by HI-FI standard. Don't misunderstand. The radio sounds fine but it's not High Fidelity.

CD's have totally disgraced all that is HI-FI. First of all CDs cannot produce the HI-FI bandwidth accuratly. They simply can't.

The Reason? DIGITAL. CD's music is encoded with a digital code. The CD player reads the code and interpets the code into a voltage that is sent to the speaker. In order for proper playback the player reads a code 44,100 times per second. Ok so that is pretty quick right? Not at all. Your computer can read codes at well over 1,000,000,000 times per second. HMMM not so fast after all.

Now the player is 16 Bit. This is the resolution. Like a photo resolution is what determines how clear and vivid a picture is. Now, 16 bit res. What does this mean to a CD player?

A bit is a simple amount of info. The amount of info to tell if somthing is on or off.

0 or 1 Hi or Low

2 bits is more info it can add other possibilities. With 2 bit there is 4 possiabilities.

Nothing Low Medium High or 0 1 2 3

now 3 bits can describe much more info with eight levels.

0 1 2 3 4 5 6 7 or

Nothing
Low
Medi Low
Hi Low
Low Medium
Hi Medium
Low Hi
Hi hi

Ok so whatI have been describing is every bit you add you double the amount of Information available. So in a classic CD player 5V is the high voltage and 0 is the low. If there are sixteen bits then that means it can make 2¹⁶ voltages between 0 and 5V.

Let's imagine this on a small scale. Somthing simple like 4 Bits. Including 0 there are 16 possible voltages. And would be this

0.3125
0.625
0.9375
1.25
1.5625
1.875
2.1875
2.5
Look this is the 8th point. We are 2.5 half of 5V
2.8125
3.125
3.4375
3.75
4.0625
4.375
4.6875
5

Ok so a 4 bit CD player could make 16 different voltage levels. What happens though when the sound being recorded to this CD is let's say .2 volts? It won't pick it up. What about if the voltage is 2.6V? It will come out as 2.5V. SO are we seeing some problems with this system?

Maybe it can't reproduce all the sounds. AHHHHHHH

Don't be discrouraged. 16 bits is plenty of voltage levels. 65,536 levels to be exact. So a CD has just OK resolution. It can't totally reproduce all the sounds despite it's high resolution. In fact a CD with digital encoding can never do it. Even with some ungodly number of bits, even megabits.

Ok so we understand the resolution of a CD player. What about the sampling rate.
The best way to describe a sampling rate is like a TV. Have you ever been online and watched a video and it had a low frame rate? How the image seems to jerk and the action doesn't match the sounds. That is the sampling rates fault. The camera took a picture a few times in a second.

When sound is recorded on a CD it works the same way. The recording device takes a sample of the music. It takes a sample 44,100 times a second. So each second of CD music is made of 44,100 parts pieced together. Now this method works great for low frequencies. But as the frequency increases the more it becomes distorted. Just like a camera, the faster the action being filmed the less it captures. What about a normal picture camera. What happens if you move while the pic is being taken. It blurs and distorts.

Likewise with sound, imagine a 20KHZ sound. That means 20,000 movments in a second. The CD recorder can read 44,100 times a second. So it can not acuratly sample the high frequency. So in one cycle of the sound, the recorder will only take 2 samples of the wave. Thus it can not be acurratly reproduced. Inversly a low frequency wave can be very well reproduced. To make it simple a low frequency like 44HZ will have 1100 samples taken in one of it's cycles.

Also in the process of changing a digital code into a analog voltage for the speakers a low pass filter is used. In digital conversion a high frequency clap is created. And is mostly ultrasonic. So a low pass filter is used to cut out the high frequency claps and DC included in the virgin analog signal. The low pass filter workes very well for this application, but unfortunatly it further cuts the upper frequencies of the HI-FI band width.

If you want true Hi-Fi go and find a true HI-FI turntable and an old record in good shape. New records would been recorded by a digital process simular to a CD so only old records from the eighties back can be the true Hi-Fi. Put a true Hi-Fi stereo and speakers with it and enjoy.

In summary Hi-Fi is rare. Stereos are mislabeled to intice you into buying them. CD's and MP3's and other digital music is never HI-FI.

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Ok so about me.

I am Jacy Henry I'm 24.
I live in Maysville GA. A small town of 1600. I am a musician and electronic tech, and last but the most I am a born again christian. SO most of my blogs will be about music religion and electronics.

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