Пик фактор и полосовое усиление
#7

Возвращаясь к амплитудам пиков.
Накидал в симуляторе 3-х полосный кроссовер Линквитца-Рейли 4-го порядка.
Получилось что-то такое:
   

Частотка выглядит так.
   

Подал на вход 6 разных WAV файлов. Благо LTSPICE умеет это делать.
Анализировались первые 2 минуты левого канала.

Для входа и каждой из 3 полос симулятор считал значения RMS, Peak to peak, Махимум и Минимум на этом 2-х минутном интервале.
Выглядит это примерно вот так:

1_Bee Ges_Wine And Women.wav

   

in_rms: RMS(v(in))=0.22164 FROM 0 TO 120
in_pkpk: PP(v(in))=1.96448 FROM 0 TO 120
in_max: MAX(v(in))=0.981323 FROM 0 TO 120
in_min: MIN(v(in))=-0.983154 FROM 0 TO 120
hpf_3k_rms: RMS(v(hpf_3k))=0.04013 FROM 0 TO 120
hpf_3k_pkpk: PP(v(hpf_3k))=1.34304 FROM 0 TO 120
hpf_3k_max: MAX(v(hpf_3k))=0.609999 FROM 0 TO 120
hpf_3k_min: MIN(v(hpf_3k))=-0.733042 FROM 0 TO 120
mid_300_3k_rms: RMS(v(mid_300_3k))=0.11023 FROM 0 TO 120
mid_300_3k_pkpk: PP(v(mid_300_3k))=1.4663 FROM 0 TO 120
mid_300_3k_max: MAX(v(mid_300_3k))=0.7545 FROM 0 TO 120
mid_300_3k_min: MIN(v(mid_300_3k))=-0.711796 FROM 0 TO 120
lpf_300_rms: RMS(v(lpf_300))=0.169238 FROM 0 TO 120
lpf_300_pkpk: PP(v(lpf_300))=1.58794 FROM 0 TO 120
lpf_300_max: MAX(v(lpf_300))=0.79262 FROM 0 TO 120
lpf_300_min: MIN(v(lpf_300))=-0.795317 FROM 0 TO 120


2_London Philharmonic Orchestra- 2011-Chorus Of The Hebrew Slaves

   

in_rms: RMS(v(in))=0.0811223 FROM 0 TO 120
in_pkpk: PP(v(in))=1.72952 FROM 0 TO 120
in_max: MAX(v(in))=0.899658 FROM 0 TO 120
in_min: MIN(v(in))=-0.829865 FROM 0 TO 120
hpf_3k_rms: RMS(v(hpf_3k))=0.00690216 FROM 0 TO 120
hpf_3k_pkpk: PP(v(hpf_3k))=0.246851 FROM 0 TO 120
hpf_3k_max: MAX(v(hpf_3k))=0.135787 FROM 0 TO 120
hpf_3k_min: MIN(v(hpf_3k))=-0.111064 FROM 0 TO 120
mid_300_3k_rms: RMS(v(mid_300_3k))=0.0624953 FROM 0 TO 120
mid_300_3k_pkpk: PP(v(mid_300_3k))=1.24048 FROM 0 TO 120
mid_300_3k_max: MAX(v(mid_300_3k))=0.603095 FROM 0 TO 120
mid_300_3k_min: MIN(v(mid_300_3k))=-0.637384 FROM 0 TO 120
lpf_300_rms: RMS(v(lpf_300))=0.0335242 FROM 0 TO 120
lpf_300_pkpk: PP(v(lpf_300))=0.87325 FROM 0 TO 120
lpf_300_max: MAX(v(lpf_300))=0.467718 FROM 0 TO 120
lpf_300_min: MIN(v(lpf_300))=-0.405532 FROM 0 TO 120


3_Rebecca Pidgeon_Spanish Harlem

   

in_rms: RMS(v(in))=0.0785527 FROM 0 TO 120
in_pkpk: PP(v(in))=0.957359 FROM 0 TO 120
in_max: MAX(v(in))=0.461724 FROM 0 TO 120
in_min: MIN(v(in))=-0.495636 FROM 0 TO 120
hpf_3k_rms: RMS(v(hpf_3k))=0.00822834 FROM 0 TO 120
hpf_3k_pkpk: PP(v(hpf_3k))=0.577767 FROM 0 TO 120
hpf_3k_max: MAX(v(hpf_3k))=0.26834 FROM 0 TO 120
hpf_3k_min: MIN(v(hpf_3k))=-0.309427 FROM 0 TO 120
mid_300_3k_rms: RMS(v(mid_300_3k))=0.0400155 FROM 0 TO 120
mid_300_3k_pkpk: PP(v(mid_300_3k))=0.762614 FROM 0 TO 120
mid_300_3k_max: MAX(v(mid_300_3k))=0.403133 FROM 0 TO 120
mid_300_3k_min: MIN(v(mid_300_3k))=-0.359482 FROM 0 TO 120
lpf_300_rms: RMS(v(lpf_300))=0.0566932 FROM 0 TO 120
lpf_300_pkpk: PP(v(lpf_300))=0.681393 FROM 0 TO 120
lpf_300_max: MAX(v(lpf_300))=0.341876 FROM 0 TO 120
lpf_300_min: MIN(v(lpf_300))=-0.339517 FROM 0 TO 120


4_Triangle When things go wrong

   

in_rms: RMS(v(in))=0.100429 FROM 0 TO 120
in_pkpk: PP(v(in))=1.3555 FROM 0 TO 120
in_max: MAX(v(in))=0.717712 FROM 0 TO 120
in_min: MIN(v(in))=-0.637787 FROM 0 TO 120
hpf_3k_rms: RMS(v(hpf_3k))=0.0118317 FROM 0 TO 120
hpf_3k_pkpk: PP(v(hpf_3k))=0.539588 FROM 0 TO 120
hpf_3k_max: MAX(v(hpf_3k))=0.248837 FROM 0 TO 120
hpf_3k_min: MIN(v(hpf_3k))=-0.290751 FROM 0 TO 120
mid_300_3k_rms: RMS(v(mid_300_3k))=0.0576628 FROM 0 TO 120
mid_300_3k_pkpk: PP(v(mid_300_3k))=1.22432 FROM 0 TO 120
mid_300_3k_max: MAX(v(mid_300_3k))=0.632766 FROM 0 TO 120
mid_300_3k_min: MIN(v(mid_300_3k))=-0.591557 FROM 0 TO 120
lpf_300_rms: RMS(v(lpf_300))=0.0596768 FROM 0 TO 120
lpf_300_pkpk: PP(v(lpf_300))=0.612572 FROM 0 TO 120
lpf_300_max: MAX(v(lpf_300))=0.318417 FROM 0 TO 120
lpf_300_min: MIN(v(lpf_300))=-0.294155 FROM 0 TO 120


5_Andy Williams Moon River

   

in_rms: RMS(v(in))=0.156651 FROM 0 TO 120
in_pkpk: PP(v(in))=1.61871 FROM 0 TO 120
in_max: MAX(v(in))=0.839172 FROM 0 TO 120
in_min: MIN(v(in))=-0.779541 FROM 0 TO 120
hpf_3k_rms: RMS(v(hpf_3k))=0.0149331 FROM 0 TO 120
hpf_3k_pkpk: PP(v(hpf_3k))=0.371744 FROM 0 TO 120
hpf_3k_max: MAX(v(hpf_3k))=0.171736 FROM 0 TO 120
hpf_3k_min: MIN(v(hpf_3k))=-0.200007 FROM 0 TO 120
mid_300_3k_rms: RMS(v(mid_300_3k))=0.100204 FROM 0 TO 120
mid_300_3k_pkpk: PP(v(mid_300_3k))=1.42374 FROM 0 TO 120
mid_300_3k_max: MAX(v(mid_300_3k))=0.693142 FROM 0 TO 120
mid_300_3k_min: MIN(v(mid_300_3k))=-0.730595 FROM 0 TO 120
lpf_300_rms: RMS(v(lpf_300))=0.0920474 FROM 0 TO 120
lpf_300_pkpk: PP(v(lpf_300))=0.990619 FROM 0 TO 120
lpf_300_max: MAX(v(lpf_300))=0.504237 FROM 0 TO 120
lpf_300_min: MIN(v(lpf_300))=-0.486382 FROM 0 TO 120


6_Royal Crown Revue - The Contender_01

   

in_rms: RMS(v(in))=0.291796 FROM 0 TO 120
in_pkpk: PP(v(in))=2.00585 FROM 0 TO 120
in_max: MAX(v(in))=1.00046 FROM 0 TO 120
in_min: MIN(v(in))=-1.00538 FROM 0 TO 120
hpf_3k_rms: RMS(v(hpf_3k))=0.0614235 FROM 0 TO 120
hpf_3k_pkpk: PP(v(hpf_3k))=1.65378 FROM 0 TO 120
hpf_3k_max: MAX(v(hpf_3k))=0.764808 FROM 0 TO 120
hpf_3k_min: MIN(v(hpf_3k))=-0.888972 FROM 0 TO 120
mid_300_3k_rms: RMS(v(mid_300_3k))=0.164907 FROM 0 TO 120
mid_300_3k_pkpk: PP(v(mid_300_3k))=2.79258 FROM 0 TO 120
mid_300_3k_max: MAX(v(mid_300_3k))=1.305 FROM 0 TO 120
mid_300_3k_min: MIN(v(mid_300_3k))=-1.48758 FROM 0 TO 120
lpf_300_rms: RMS(v(lpf_300))=0.203399 FROM 0 TO 120
lpf_300_pkpk: PP(v(lpf_300))=1.90745 FROM 0 TO 120
lpf_300_max: MAX(v(lpf_300))=0.970688 FROM 0 TO 120
lpf_300_min: MIN(v(lpf_300))=-0.936757 FROM 0 TO 120

Результаты естественно очень разные, но видно что в некоторых случаях (например 6-ая фонограмма), пиковое значение в полосе может даже превосходить исходное пиковое значение.
За 100% считается уровень 1В

Если кто-то захочет поиграться сам-файл модели прилагается. Без исходников WAV файлов есесьно. Долго аплодить.


Файлы вложений
.zip Peak_Factor_Multiband.zip Размер: 5.21 KB  Загрузок: 4

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Сообщения в этой теме
Пик фактор и полосовое усиление - от flipper - 05-31-2014, 11:54 AM
RE: Пик фактор и полосовое усиление - от begemot - 05-31-2014, 11:29 PM
RE: Пик фактор и полосовое усиление - от flipper - 06-01-2014, 12:10 AM
RE: Пик фактор и полосовое усиление - от begemot - 06-01-2014, 07:04 AM
RE: Пик фактор и полосовое усиление - от flipper - 06-01-2014, 08:04 AM
RE: Пик фактор и полосовое усиление - от begemot - 06-01-2014, 08:29 AM
RE: Пик фактор и полосовое усиление - от begemot - 08-22-2014, 05:56 PM

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