Thunder is the sound caused by a nearby flash of lightning and can be heard for a distance of only about 10 miles from the lightning strike. The sound of thunder should serve as a warning to anyone outside that they are within striking distance of the storm and need to get to a safe place immediately!
Thunder is created when lightning passes through the air. The lightning discharge heats the air rapidly and causes it to expand. The temperature of the air in the lightning channel may reach as high as 50,000 degrees Fahrenheit, 5 times hotter than the surface of the sun. Immediately after the flash, the air cools and contracts quickly. This rapid expansion and contraction creates the sound wave that we hear as thunder.
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Although a lightning discharge usually strikes just one spot on the ground, it travels many miles through the air. When you listen to thunder, you'll first hear the thunder created by that portion of the lightning channel that is nearest you. As you continue to listen, you'll hear the sound created from the portions of the channel farther and farther away. Typically, a sharp crack or click will indicate that the lightning channel passed nearby. If the thunder sounds more like a rumble, the lightning was at least several miles away. The loud boom that you sometimes hear is created by the main lightning channel as it reaches the ground.
Since you see lightning immediately and it takes the sound of thunder about 5 seconds to travel a mile, you can calculate the distance between you and the lightning. If you count the number of seconds between the flash of lightning and the sound of thunder, and then divide by 5, you'll get the distance in miles to the lightning: 5 seconds = 1 mile, 15 seconds = 3 miles, 0 seconds = very close.
Keep in mind that you should be in a safe place while counting. Remember, if you can hear thunder, chances are that you're within striking distance of the storm. You don't want to get struck by the next flash of lightning.
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I'm going to need some lightning hit sounds in the next project and I guess I'm going to settle with library samples, but out of curiosity would like to know some tips for making at least "cartooon believable" lightning hit sound effects with everyday items.
I'm aware of general thunder trick with huge metal sheets, but that's more like thunder ambience, than single lightning hit. I'm going to record some small tesla coils in next weeks and probably could use sounds from those, though I wouldn't call tesla coil an everyday item :) I've also considered making some plasma balls in microwave oven, which I think could be useful as a very short attack part or as an electric layer in the tail. Hard to tell since all the videos of such plasma balls I've seen have been recorded with very low sound quality.
As some of the recordings of thunder and lightning out there are so incredible I don't think I would ever try to re-create this from scratch for practical purposes, but I guess it makes for a good theoretical challenge. In terms of taste, I would only use a bit of the electrical buzz type sound you will get from your teslas. Essentially you are looking for a large cracking sound with some distortion, but I think the thing that's really going to make it convincing is working on the decay/reverb as this is what makes the recordings so intense - the amount of energy and complexity of the space. Maybe multiple reverb layers and subtle delays could help create this.
Only thing I can think of that might come close is hitting a large metal garage door with a heavy metal object like a hammer.That'll give you the sharp attack of a lightning strike and the reverb from the garage should give you an interesting decay.Careful you don't break the door though!
There are about three distinct characters to the sound. First, there's a sound like the uncomfortable squeak of two glass objects being rubbed together with grit between them...similar to fingernails on a blackboard...
Finally, just following, there's the thunder report, which has a very fast attack and rise, and sounds like a cannon going off, but with lots of high end "crack" instead of low end "boom" though it does have huge power bands in the low end.
You will be making a large "pop" sound, such as you might by using a finger in your mouth like kids do, but producing a much bigger sound. The Time Cube type of reverberation will lengthen the sound and give it the multi-hollow reverberation similar to what you hear by listening to things through a vacuum cleaner hose.
Obtain a large rubber stopper for laboratory apparatus and a 2 foot (or so) length of straight stiff ABS pipe. The stopper has to tightly fit inside the pipe. Drill a hole through the stopper, fit a bolt through it and attach some light cable to the bolt.Clamp the pipe vertically, spray WD40 into the pipe, covering every bit of interior surface. Feed the cable down through the pipe and insert the stopper into the top of the pipe. Close the top of the pipe with an abs cap and cover the seam with duct tape. Attach a cement block to the cable at the bottom of the pipe.
In place of the tree branch, you might use the sound of objects being knocked flying. A pile of tin cans being knocked down a cement incline might demonstrate this effect.This is a bit of work. If successful, you will achieve some originality.
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I personally feel that local files sound noticeably better wih Lightning DS with my Aries G1. Imo the clarity and dynamics is the biggest difference and the depth of image the second. Now, this is is no huge difference, but quite noticeable.
With Tidal content the differences are harder to spot for me.
I have read some topics since on the Auralic forum about people missing the old version of Lightning DS for its allegedly superior sound and remember thinking something like: maybe that was the sound profile I disliked.
Thank you for your detailed response. I am playing a Auralic G2 to a Chord M scaler to a Chord TT2
( filter 3 ) in amp mode as preamp straight thru to Mark Levinson AMP. I found that the high frequencies were harsher than Roon but a bit more present with a sense of increased vibrancy and saturation thru DS. The harsher high frequencies was fatiguing.I switched my interconnects which are Dual BNC to Tara Labs with a ground EVO and it really addressed that problem and brought out the best. When I compared it to Roon it was only better in certain complex tracks with crashing high hat cymbals and similar frequencies.
I appreciate our feedback.
My Auralic Vega G1 has an inbuilt preamp. Despite this, I have been searching for a new preamp because something musical seemed to be missing. And because I love Roon so much, I had spent next to no time testing Lightning DS, that is until recently. If only, I had read these posts earlier. Some posts mention clarity. Yes, but more than just clarity, with Lightning DS there is air, transparency and above all sound stage! The music had a three-dimensional quality that had been missing. My music became engaging,
For me, the contrast between Roon and Lightning DS was like comparing mp3 to lossless. Classical is my favourite genre and if you listen to classical you will know that mp3 classical is muddy.
The great thing is we have a choice. Even if Lightning DS becomes my favoured platform I will never regret my Roon lifetime membership.
I am connecting an iPad Air to a projector using the lightning-to-HDMI adapter. So the adapter plugs into the iPad (via the lightning port) and then the HDMI cable from the projector connects to the adapter.
The image shows up on the projection screen perfectly. But there is no sound. When I unplug the adapter, the image disappears (obviously) but the sound immediately plays through the iPad speaker. Plug the adapter back in and the image shows up but the sound disappears.
That is because sending audio in the laptop is different than the iPad. You have the option to send audio to a different source. For the iPad, the audio and video send through the adapter, and the adapter is getting the audio from the lightning cable and you cannot stop that. It does not have more than one source. Is that an Apple adapter? The new one with the USB-C costs more than that! That is what I have to use on my iPad Pro.
In the vast majority of cases, as projectors lack audio capabilities, they are usually immediately preceded in the chain by an AV Amplifier. Audio/Video output from the HDMI source (e.g., iPad, Media Player, BluRay player etc) is passed to the AV Amp over HDMI - where audio is decoded, amplified and output directly to speakers - whist the video element is passed-through to the projector.
I don't believe what you want will work. The HDMI cable is sending audio and video to the projector as it was designed to do. The audio needs somewhere to go, so you'll need to connect speakers to the projector or get a projector with speakers built in.
I believe so. My guess is that the audio is being sent to the projector but then is just being "trapped" there because there are no speakers for it to escape through. I'm hoping there is a way to just route the audio back to the iPad so it can play through the iPad speaker. I'm sure there must be a way(?)
With the lightning and the HDMI connected, your audio is going through the HDMI to the projector. If the projector does not have audio speakers connected, there is no method to select the iPad to provide the audio. You will need to connect speakers to the projector. 152ee80cbc
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